460 results match your criteria diameter shoots

Moniliophthora perniciosa, the causal agent of witches' broom disease of cacao, interferes with cytokinin metabolism during infection of Micro-Tom tomato and promotes symptom development.

New Phytol 2021 Apr 7. Epub 2021 Apr 7.

Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, SP, 13400-970, Brazil.

Moniliophthora perniciosa causes witches' broom disease of cacao and inflicts symptoms suggestive of hormonal imbalance. We investigated whether infection of the tomato (Solanum lycopersicum) model system Micro-Tom (MT) by the Solanaceae (S)-biotype of M. perniciosa, which causes stem swelling and hypertrophic growth of axillary shoots, results from changes in host cytokinin metabolism. Read More

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Exogenous melatonin mitigates chromium toxicity in maize seedlings by modulating antioxidant system and suppresses chromium uptake and oxidative stress.

Environ Geochem Health 2021 Apr 2. Epub 2021 Apr 2.

Department of Forestry and Wildlife, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.

Melatonin, being an endogenous signaling molecule plays important role in plant growth and stress alleviation. The present study was conducted to evaluate the ameliorative role of melatonin against Cr toxicity in maize seedlings. The Cr toxicity (50, 100 and 200 µM) severely affected hydroponically grown seedlings growth in a dose-dependent manner; however, the melatonin (0. Read More

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First Report of Xanthomonas arboricola pv. pruni Causing Leaf and Fruit Spot on Apricot (Prunus armeniaca L.) in Montenegro.

Plant Dis 2021 Feb 12. Epub 2021 Feb 12.

University of Belgrade, Faculty of Agriculture, Institute of Phytomedicine, Plant Pathology, Nemanjina 6, Belgrade, Serbia, 11080;

In July 2020, symptoms of leaf and fruit spot were observed on two-year old apricot plants (Prunus armeniaca L.), cultivar Rubista in plantation covering approximately 0,5 ha near Podgorica, central Montenegro. The intensity of infection on leaves was more than 70%. Read More

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February 2021

Influence of forest stand characteristics on physical, mechanical properties and chemistry of chestnut wood.

Sci Rep 2021 Jan 15;11(1):1549. Epub 2021 Jan 15.

Università degli Studi della Tuscia (DIBAF), Viterbo, Italy.

Site conditions and forest management affect dendrometric parameters of chestnut (Castanea sativa Mill.) coppices, but there is modest knowledge on the effect of stand dendrometric characters on physical and mechanical wood characteristics. The aim of this study was to verify these relationships in chestnut coppices that were 12-14 years old. Read More

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January 2021

Apple Autotetraploids with Enhanced Resistance to Apple Scab () Due to Genome Duplication-Phenotypic and Genetic Evaluation.

Int J Mol Sci 2021 Jan 7;22(2). Epub 2021 Jan 7.

Department of Applied Biology, Research Institute of Horticulture, Konstytucji 3 Maja 1/3 Street, 96-100 Skierniewice, Poland.

Among the fungal diseases of apple trees, serious yield losses are due to an apple scab caused by . Protection against this disease is based mainly on chemical treatments, which are currently very limited. Therefore, it is extremely important to introduce cultivars with reduced susceptibility to this pathogen. Read More

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January 2021

Discovery of new genetic determinants of morphological plasticity in rice roots and shoots under phosphate starvation using GWAS.

J Plant Physiol 2021 Feb 15;257:153340. Epub 2020 Dec 15.

Department of Life Sciences, University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST). 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam. Electronic address:

Phosphorus is an essential nutrient for plants that is often in short supply. In rice (Oryza sativa L.), inorganic phosphate (P) deficiency leads to various physiological disorders that consequently affect plant productivity. Read More

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February 2021

Emerging investigator series: entrapment of uranium-phosphorus nanocrystals inside root cells of plants from a mine waste site.

Environ Sci Process Impacts 2021 Feb;23(1):73-85

Department of Civil Engineering, MSC01 1070, University of New Mexico, Albuquerque, New Mexico 87131, USA.

We investigated the mechanisms of uranium (U) uptake by Tamarix (salt cedars) growing along the Rio Paguate, which flows throughout the Jackpile mine near Pueblo de Laguna, New Mexico. Tamarix were selected for this study due to the detection of U in the roots and shoots of field collected plants (0.6-58. Read More

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February 2021

Biogenic iron oxide nanoparticles enhance callogenesis and regeneration pattern of recalcitrant Cicer arietinum L.

PLoS One 2020 1;15(12):e0242829. Epub 2020 Dec 1.

Department of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.

This study is the first report on the biosynthesized iron oxide nanoparticles (IONPs) which mediate in-vitro callus induction and shoot regeneration in economically important recalcitrant chickpea crop (Cicer arietinum L.). Here, we used leaf extract of Cymbopogon jwarancusa for the synthesis of IONPs in order to achieve a better biocompatibility. Read More

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January 2021

First Report of Dieback Caused by in Cashew in Guinea-Bissau.

Plant Dis 2020 Dec 1. Epub 2020 Dec 1.

University of Lisbon Faculty of Sciences, 111161, cE3c, Campo Grande, Lisbon, Lisboa, Portugal, 1749-016.

Cashew ( L.) is a cash crop with a highly significant economic importance in West Africa, particularly in Guinea-Bissau (Monteiro et al. 2015, 2017). Read More

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December 2020

Microsphere stem blockage as a screen for nitrogen-fixation drought tolerance in soybean.

Physiol Plant 2020 Nov 18. Epub 2020 Nov 18.

Soybean and nitrogen-fixation Unit, USDA-ARS, Raleigh, North Carolina, USA.

Symbiotic nitrogen-fixation of soybean (Glycine max [Merr.] L) commonly decreases in response to soil drying in advance of other plant processes. While a few soybean lines express nitrogen-fixation drought tolerance, breeding for genetic variation is hampered by laborious phenotyping procedures. Read More

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November 2020

Mechanisms of High Concentration Valine-Mediated Inhibition of Peach Tree Shoot Growth.

Front Plant Sci 2020 29;11:603067. Epub 2020 Oct 29.

State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China.

The vigorous growth of the new shoots of the peach tree was not beneficial to high quality and efficient cultivation. High concentration of amino acids can inhibit plant growth, but the mechanism is not clear. In this study, we explored the regulatory effects of seven amino acids (phenylalanine, valine, leucine, isoleucine, serine, D-alanine, and proline) (10 g⋅L) on the growth of peach trees. Read More

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October 2020

Effects on anatomy of some abundantly growing herbs in the effluents contaminated soil of oil refinery.

Environ Sci Pollut Res Int 2021 Mar 30;28(9):11549-11557. Epub 2020 Oct 30.

Environmental Botany and Biotechnology Laboratory, Department of Botany, Gauhati University, Guwahati, Assam, 781014, India.

The soil contaminations from refinery effluents are still a burning problem in the oil-producing nations of the globe. In the present study, the effect of oil refinery effluents on anatomical characteristics of some selected herbs has been studied. The abundantly growing herb species of the contaminated sites that includes Ageratum conyzoides, Alternanthera paronychioides, and Cyperus brevifolius were selected for the anatomical investigation. Read More

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First Report of Damping-off on Sedum plumbizincicola Caused by Rhizoctonia solani AG 2-1 in China.

Plant Dis 2020 Oct 21. Epub 2020 Oct 21.

Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Nongda Road 1, Furong District, Changsha City, Hunan Province, Changsha, China;

Sedum plumbizincicola X.H. Guo et S. Read More

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October 2020

Effect of elevated gibberellic acid application on growth and gene expression patterns in white spruce families from a tree improvement program in Alberta, Canada.

Tree Physiol 2021 03;41(3):472-490

Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, Edmonton, AB T6G 2E3, Canada.

Nine open-pollinated families of Picea glauca (Moench) Voss from the Region D1 Controlled Parentage Program (Alberta, Canada) were systematically chosen from fast, medium and slow-growth rankings based on breeding values for height from field progeny tests at age 30 years. Seeds from these families were sown and grown to age 3 years to analyze the performance and correlations of growth, physiological traits and expression of gibberellin-related genes, with and without elevated gibberellic acid 3 (GA3) application, under greenhouse conditions. We observed a significant interaction effect between families and growth groups subjected to 50 μg μl-1 of GA3 treatment, causing a decrease in apical internode length, diameter, volume and absolute transcript level for fast-growing families but an increase for families in the slow-growth group for the same traits. Read More

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Comparative transcriptome analyses provide novel insights into etiolated shoot development of walnut (Juglans regia L.).

Planta 2020 Oct 6;252(5):74. Epub 2020 Oct 6.

Beijing Academy of Forestry and Pomology Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China), Ministry of Agriculture and Rural Affairs, Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, China.

Main Conclusion: In general, genes promoting IAA, CTK GA and ethylene biosynthesis were upregulated, while genes participating in ABA, chlorophyll and starch biosynthesis pathways performed opposite tendency during etiolation. Etiolation as a method for rejuvenation plays an important role in the vegetative propagation of woody plants. However, the molecular mechanism of etiolated shoot development remains unclear. Read More

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October 2020

Native bacteria isolated from roots and rhizosphere of Solanum lycopersicum L. increase tomato seedling growth under a reduced fertilization regime.

Sci Rep 2020 09 24;10(1):15642. Epub 2020 Sep 24.

Instituto de Biología Agrícola de Mendoza (IBAM-CONICET), Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, 5507, Chacras de Coria, Mendoza, Argentina.

In semiarid regions is important to use native strains best adapted to these environments to optimize plant-PGPR interaction. We aimed to isolate and characterize PGPR from roots and rhizosphere of a tomato crop, as well as studying the effect of its inoculation on tomato seedlings growth. We selected four strains considering their effectiveness of fixing nitrogen, solubilizing phosphate, producing siderophores and indole acetic acid. Read More

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September 2020

Linking wood anatomy with growth vigour and susceptibility to alternate bearing in composite apple and pear trees.

Plant Biol (Stuttg) 2021 Jan 26;23(1):172-183. Epub 2020 Oct 26.

Department of Biology, Faculty of Science, University of Hradec Králové, Hradec Králové, Czech Republic.

Excess vegetative growth and irregular fruit-bearing are often undesirable in horticultural practice. However, the biological mechanisms underlying these traits in fruit trees are not fully understood. Here, we tested if growth vigour and susceptibility of apple and pear trees to alternate fruit-bearing are associated with vascular anatomy. Read More

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January 2021

Rescue and vegetative propagation of Eremanthus erythropappus (DC.) MacLeish in natural stand.

Braz J Biol 2021 Jul-Sep;81(3):566-574

ªDepartamento de Ciências Florestais, Universidade Federal de Lavras, universitário, s.n., CP 3037, CEP 37200-900, Lavras, MG, Brasil.

The native stands of 'candeia' (Eremanthus erythropappus) have been explored through management plans due to the economic potential of essential oil. The rescue of adult trees, as well as the application of silvicultural techniques that favor the restoration of the stand, can contribute to the genetic conservation of this species. This study's objective was to assess the efficiency of propagation techniques for the rescue of 26 matrices of 'candeia' in a natural managed stand and discussion about the rhizogenesis. Read More

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February 2021

Evaluation of an Alternative Small Stem Assay for Blight Resistance in American, Chinese, and Hybrid Chestnuts ( spp.).

Plant Dis 2021 Mar 1;105(3):576-584. Epub 2021 Feb 1.

Berry College, Department of Biology, Mount Berry, GA 30149.

We tested an alternative small stem assay (SSA) for blight resistance in chestnuts ( spp.). Whereas standard SSAs are done by inoculating small incisions in stems, we cut off stems (4 to 5 mm diameter), inoculated the cut ends with discs of inoculum, and covered them with plastic sleeves. Read More

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Transcriptional, metabolic, physiological and developmental responses of switchgrass to phosphorus limitation.

Plant Cell Environ 2021 01 7;44(1):186-202. Epub 2020 Oct 7.

Noble Research Institute LLC, Ardmore, Oklahoma, USA.

Knowing how switchgrass (Panicum virgatum L.) responds and adapts to phosphorus (P)-limitation will aid efforts to optimize P acquisition and use in this species for sustainable biomass production. This integrative study investigated the impacts of mild, moderate, and severe P-stress on genome transcription and whole-plant metabolism, physiology and development in switchgrass. Read More

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January 2021

Interactions of cadmium and zinc in high zinc tolerant native species Andropogon gayanus cultivated in hydroponics: growth endpoints, metal bioaccumulation, and ultrastructural analysis.

Environ Sci Pollut Res Int 2020 Dec 14;27(36):45513-45526. Epub 2020 Aug 14.

Department of Soil Science, Federal University of Lavras, Lavras, Minas Gerais, Brazil.

Cadmium (Cd) and zinc (Zn) toxicity causes physiological disorders and harms plants, interfering with the rehabilitation of areas affected by mining activities. This study evaluated how the exposure to Zn and/or Cd affects the growth of native andropogon grass (Andropogon gayanus Kunth) plants originally found in areas contaminated with Cd and/or Zn due to zinc mining activities. Plants were cultivated for 7 weeks in a nutrient solution treated with Zn (142. Read More

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December 2020

Phytophthora cactorum as a Pathogen Associated with Root Rot on Alfalfa (Medicago sativa) in China.

Plant Dis 2020 Aug 6. Epub 2020 Aug 6.

Lanzhou University, Lanzhou, Gansu Province, China;

Alfalfa (Medicago sativa) is the largest grown pasture crop in China due to its economic and ecological importance. During the summer season from June to August in 2018, stunted plants was frequently observed in alfalfa fields that have been established for two years in Jinchang, Gansu Province. The disease incidence of root rot ranged from 40% to 50%. Read More

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First Report of canker and branch dieback of sweet cherry trees caused by in Chile.

Plant Dis 2020 Aug 6. Epub 2020 Aug 6.

Universidad de Chile, Sanidad Vegetal, Santa Rosa 11.315, Santiago, Chile, 8820808;

In Chile, the 2019-2020 sweet cherry season yielded 228,548 t, produced on 38,392 hectares and an average annual crop value about US$1.6 billion (http://www.iqonsulting. Read More

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Gender-related responses of dioecious plant Populus cathayana to AMF, drought and planting pattern.

Sci Rep 2020 07 13;10(1):11530. Epub 2020 Jul 13.

State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Lingnan Guangdong Laboratory of Modern Agriculture, Guangdong Key Laboratory for Innovative Ddevelopment and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China.

In our previous studies, we detected drought, gender and arbuscular mycorrhizal (AM) inoculation effects on dioecious plant. Based on this, we investigated the intra- and inter-sexual competition between male and female plants. Dioecious plant Populus cathayana was used and we set 3 factors in this experiment: (1) AM inoculation/non-inoculation; (2) well-watered/water-stressed; (3) single-gender pattern (only 4 males or 4 females)/mixed-gender pattern (2 males and 2 females). Read More

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Temperature- and pH-Responsive Star Polymers as Nanocarriers with Potential for Agrochemical Delivery.

ACS Nano 2020 09 14;14(9):10954-10965. Epub 2020 Jul 14.

Climate change is increasing the severity and length of heat waves. Heat stress limits crop productivity and can make plants more sensitive to other biotic and abiotic stresses. New methods for managing heat stress are needed. Read More

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September 2020

Unraveling the mechanisms controlling Cd accumulation and Cd-tolerance in Brachiaria decumbens and Panicum maximum under summer and winter weather conditions.

Physiol Plant 2020 Jun 30. Epub 2020 Jun 30.

College of Agriculture Luiz de Queiroz, University of São Paulo, Piracicaba, Brazil.

We evaluated the mechanisms that control Cd accumulation and distribution, and the mechanisms that protect the photosynthetic apparatus of Brachiaria decumbens Stapf. cv. Basilisk and Panicum maximum Jacq. Read More

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Reduced cadmium accumulation in tobacco by sodium chloride priming.

Environ Sci Pollut Res Int 2020 Oct 12;27(30):37410-37418. Epub 2020 May 12.

Institute of Tobacco Research, Chinese Academy of Agricultural Sciences, 11 Keyuanjingsi Road, Qingdao, 266101, People's Republic of China.

Cadmium (Cd) pollution threatens agricultural security worldwide. This study tested the efficacy of priming chemicals to decrease Cd uptake by tobacco plants (Nicotiana tabacum). After initial screening from nine different chemicals (NaCl, Cd(CHCOO), Cd(NO), CdCl, KHNO, polyethylene glycol 6000 (PEG-6000), indole-3-acetic acid (IAA), ß-aminobutyric acid (BABA), and glutathione (GSH)), NaCl and PEG-6000 were further investigated because of their low risks to plant growth and efficiency to Cd reduction. Read More

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October 2020

Seminal and Nodal Roots of Barley Differ in Anatomy, Proteome and Nitrate Uptake Capacity.

Plant Cell Physiol 2020 Jul;61(7):1297-1308

Molecular Plant Nutrition, Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstrasse 3, 06466 Gatersleben, Germany.

The root system of barley plants is composed of embryogenic, seminal roots as well as lateral and nodal roots that are formed postembryonically from seminal roots and from the basal part of shoots, respectively. Due to their distinct developmental origin, seminal and nodal roots may differ in function during plant development; however, a clear comparison between these two root types has not yet been undertaken. In this study, anatomical, proteomic and physiological traits were compared between seminal and nodal roots of similar developmental stages. Read More

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Multi-walled carbon nanotubes produced after forest fires improve germination and development of .

PeerJ 2020 23;8:e8634. Epub 2020 Apr 23.

Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México.

Background: Multi-walled carbon nanotubes (MWCNTs) are nanoparticles with countless applications. MWCNTs are typically of synthetic origin. However, recently, the formation of MWCNTs in nature after forest fires has been documented. Read More

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[Effects of the current-year shoot stem configuration on leaf biomass in different canopy heights of woody plants in evergreen broad-leaved forest in Jiangxi Province, China.]

Ying Yong Sheng Tai Xue Bao 2019 Nov;30(11):3653-3661

Fujian Provincial Key Laboratory of Plant Ecophysiology, Fujian Normal University, Fuzhou 350007, China.

To investigate the effects of stem configuration on leaf biomass allocation in different organs of the current-year shoots at different canopy heights, relationships of biomass in different organs (i.e., leaves, stems, and twigs) and stem configuration (i. Read More

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November 2019