Search Our Scientific Publications & Authors

Publications
find publications by category +
Translate page:

Identification of Main-Effect and Environmental Interaction QTL and Their Candidate Genes for Drought Tolerance in a Wheat RIL Population Between Two Elite Spring Cultivars.

Authors:
S M Hisam Al Rabbi Ajay Kumar Sepehr Mohajeri Naraghi Suraj Sapkota Mohammed S Alamri Elias M Elias Shahryar Kianian Raed Seetan Ali Missaoui Shyam Solanki Mohamed Mergoum

Front Genet 2021 17;12:656037. Epub 2021 Jun 17.

Institute of Plant Breeding, Genetics, and Genomics, University of Georgia, Griffin, GA, United States.

Understanding the genetics of drought tolerance can expedite the development of drought-tolerant cultivars in wheat. In this study, we dissected the genetics of drought tolerance in spring wheat using a recombinant inbred line (RIL) population derived from a cross between a drought-tolerant cultivar, 'Reeder' (PI613586), and a high-yielding but drought-susceptible cultivar, 'Albany.' The RIL population was evaluated for grain yield (YLD), grain volume weight (GVW), thousand kernel weight (TKW), plant height (PH), and days to heading (DH) at nine different environments. The Infinium 90 k-based high-density genetic map was generated using 10,657 polymorphic SNP markers representing 2,057 unique loci. Quantitative trait loci (QTL) analysis detected a total of 11 consistent QTL for drought tolerance-related traits. Of these, six QTL were exclusively identified in drought-prone environments, and five were constitutive QTL (identified under both drought and normal conditions). One major QTL on chromosome 7B was identified exclusively under drought environments and explained 13.6% of the phenotypic variation (PV) for YLD. Two other major QTL were detected, one each on chromosomes 7B and 2B under drought-prone environments, and explained 14.86 and 13.94% of phenotypic variation for GVW and YLD, respectively. One novel QTL for drought tolerance was identified on chromosome 2D. expression analysis of candidate genes underlaying the exclusive QTLs associated with drought stress identified the enrichment of ribosomal and chloroplast photosynthesis-associated proteins showing the most expression variability, thus possibly contributing to stress response by modulating the glycosyltransferase () and hexosyltransferase () unique genes present in QTL 21 and 24, respectively. While both parents contributed favorable alleles to these QTL, unexpectedly, the high-yielding and less drought-tolerant parent contributed desirable alleles for drought tolerance at four out of six loci. Regardless of the origin, all QTL with significant drought tolerance could assist significantly in the development of drought-tolerant wheat cultivars, using genomics-assisted breeding approaches.

Download full-text PDF

 Source
http://dx.doi.org/10.3389/fgene.2021.656037DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8249774PMC
June 2021

Publication Analysis

Top Keywords

drought tolerance
24
ril population
12
qtl drought
12
qtl
11
drought
10
drought-prone environments
8
phenotypic variation
8
candidate genes
8
environments explained
8
development drought-tolerant
8
major qtl
8
genetics drought
8
tolerance
6
identified
5
qtl chromosome
4
conditions major
4
identified exclusively
4
normal conditions
4
exclusively drought
4
chromosome identified
4

Keyword Occurance

Similar Publications

Differential tolerance of the woody invasive Hakea sericea to drought and terminal heat stress.

Authors:
Maria C Morais Helena Ferreira João A Cabral Berta Gonçalves

Tree Physiol 2022 Aug 12. Epub 2022 Aug 12.

Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal.

Drought and extreme temperatures are likely to be more common and intense in the Mediterranean region as a consequence of climate change. Both stresses usually arise together in the field, but our understanding of their joint influence on the performance of invasive alien species (IAS) is limited. Thus, the main objective of the present study is to fill this gap by analyzing the individual and combined effects of drought and terminal heat stress on the leaf physiology, biochemistry, and growth of Hakea sericea, one of the most problematic IAS in the Mediterranean-type ecosystems. Read More

View Article and Full-Text PDF
August 2022
Similar Publications

Association mapping for abiotic stress tolerance using heat- and drought-related syntenic markers in okra.

Authors:
Ikhlaq Ahmad Rashid Mehmood Rana Mahmood Ul Hassan Muhammad Azam Khan Muhammad Sajjad

Mol Biol Rep 2022 Aug 12. Epub 2022 Aug 12.

Department of Biosciences, COMSATS University Islamabad (CUI), Park Road, Islamabad, 45550, Pakistan.

Background: Considerable production losses are caused by heat and drought stress in okra. Germplasm evaluation at genetic level is essential for the selection of promising genotypes. Lack of genomic information of okra limits the use of genetic markers. Read More

View Article and Full-Text PDF
August 2022
Similar Publications

A gain-of-function allele of a DREB transcription factor gene ameliorates drought tolerance in wheat.

Authors:
Fangming Mei Bin Chen Linying Du Shumin Li Dehe Zhu Nan Chen Yifang Zhang Fangfang Li Zhongxue Wang Xinxiu Cheng Li Ding Zhensheng Kang Hude Mao

Plant Cell 2022 Aug 12. Epub 2022 Aug 12.

State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.

Drought is a major environmental factor limiting wheat production worldwide. However, the genetic components underlying wheat drought tolerance are largely unknown. Here, we identify a DREB transcription factor gene (TaDTG6-B) by genome-wide association study that is tightly associated with drought tolerance in wheat. Read More

View Article and Full-Text PDF
August 2022
Similar Publications

Effects of drought and heat stresses during reproductive stage on pollen germination, yield, and leaf reflectance properties in maize ( L.).

Authors:
Raju Bheemanahalli Purushothaman Ramamoorthy Sadikshya Poudel Sathishkumar Samiappan Nuwan Wijewardane K Raja Reddy

Plant Direct 2022 Aug 8;6(8):e434. Epub 2022 Aug 8.

Department of Plant and Soil Sciences Mississippi State University Mississippi State MS USA.

Drought and heat stresses are the major abiotic stress factors detrimental to maize ( L.) production. Much attention has been directed toward plant responses to heat or drought stress. Read More

View Article and Full-Text PDF
August 2022
Similar Publications

Integrated omics approaches for flax improvement under abiotic and biotic stress: Current status and future prospects.

Authors:
Bindu Yadav Vikender Kaur Om Prakash Narayan Shashank Kumar Yadav Ashok Kumar Dhammaprakash Pandhari Wankhede

Front Plant Sci 2022 25;13:931275. Epub 2022 Jul 25.

Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, New Delhi, India.

Flax ( L.) or linseed is one of the important industrial crops grown all over the world for seed oil and fiber. Besides oil and fiber, flax offers a wide range of nutritional and therapeutic applications as a feed and food source owing to high amount of -linolenic acid (omega-3 fatty acid), lignans, protein, minerals, and vitamins. Read More

View Article and Full-Text PDF
July 2022
Similar Publications
}