Genome-wide association study of soybean seed germination under drought stress

Liu, Zhangxiong; Li, Huihui; Gou, Zuowang; Zhang, Yanjun; Wang, Xingrong; Ren, Honglei; Zhang, Wen; Kang, Beom‐Kyu; Li, Yinghui; Yu, Lili; Gao, Huawei; Wang, Dechun; Qi, Xusheng; Qiu, Lijuan

doi:10.1007/s00438-020-01646-0

Cited by 33 publications

(25 citation statements)

References 82 publications

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“…It is an important and essential developmental stage in the plants life cycle, which is highly protected against environmental stresses. In the later stage, water stress can also severely affect the overall growth and establishment of the plant (Liu, Li, et al, 2020). Melatonin was reported to alleviate the effect of drought stress on germination (Zhang et al, 2013).…”

Section: Germinationmentioning

confidence: 99%

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Tiwari

Lal

Kumar

et al. 2021

Physiologia Plantarum

177

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Drought stress imposes a serious threat to crop productivity and nutritional security.Drought adaptation mechanisms involve complex regulatory network comprising of various sensory and signaling molecules. In this context, melatonin has emerged as a potential signaling molecule playing a crucial role in imparting stress tolerance in plants. Melatonin pretreatment regulates various plant physiological processes such as osmoregulation, germination, photosynthesis, senescence, primary/secondary metabolism, and hormonal cross-talk under water deficit conditions. Melatoninmediated regulation of ascorbate-glutathione (AsA-GSH) cycle plays a crucial role to scavenge reactive oxygen species generated in the cells during drought. Here, in this review, the current knowledge on the role of melatonin to ameliorate adverse effects of drought by modulating morphological, physiological, and redox regulatory processes is discussed. The role of melatonin to improve water absorption capacity of roots by regulating aquaporin channels and hormonal cross-talk involved in drought stress mitigation are also discussed. Overall, melatonin is a versatile bio-molecule involved in growth promotion and yield enhancement under drought stress that makes it a suitable candidate for eco-friendly crop production to ensure food security.

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Section: Germinationmentioning

confidence: 99%

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Tiwari

Lal

Kumar

et al. 2021

Physiologia Plantarum

177

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“…Drought tolerance is a quantitative trait controlled by multiple genes [14,23]. In this study, the distribution of phenotypic index values demonstrated signi cant variation in the 410 accession panel (Fig.…”

Section: Discussionmentioning

confidence: 57%

“…Kaler et al [24] used 31,260 SNPs to conduct genome-wide association analysis on 373 soybean accessions and identi ed 47 SNP markers related to WUE (water use e ciency). Liu et al [14] used 4616 SNPs to conduct genome-wide association analysis on 259 soybean accessions at the germination stage and identi ed 15 QTLs related to drought tolerance indices during germination.…”

Section: Introductionmentioning

confidence: 99%

“…Extensive research has been conducted to study drought tolerance in soybean. The main drought tolerance traits identi ed to date include germination rate [2,13,14], germination energy [2], drought index [15], leaf wilting [1,16,17], water use e ciency [18,19], canopy wilt [7,20], brous roots [20], and yield under water de cit [21]. Research investigating drought tolerance at the germination stage of soybean has been mainly based on PEG treatment to simulated drought conditions.…”

Section: Introductionmentioning

confidence: 99%

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Identification of drought-tolerance genes in the germination stage of soybean

Zhao¹,

Liu²,

Li³

et al. 2020

Preprint

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Background Drought stress influences the vigor of plant seeds and inhibits seed germination, making it one of the primary environmental factors adversely affecting food security. The seed germination stage is critical to ensuring the growth and productivity of soybeans in soils prone to drought conditions. We here examined the genetic diversity and drought-tolerance phenotypes of 410 accessions of a germplasm diversity panel for soybean and conducted quantitative genetics analyses to identify loci associated with the drought-tolerance of seedlings. Results We uncovered significant differences among the diverse genotypes for 4 growth indices and 5 drought-tolerance indices, which revealed abundant variation among genotypes, upon drought stress, and for genotype × treatment effects. We also used 158,327 SNP markers, and performed GWAS for the drought-related traits. Our data met the conditions (PCA + K) for using a mixed linear model in TASSEL, and we thusly identified 26 SNPs associated with drought tolerance indices for germination stage soybean plants. These were distributed across 10 soybean chromosomes, and these explain 5.19–9.66% of the observed phenotypic variation. Nine SNP sites, including for example Gm20_34956219 and Gm20_34956219, were associated with two or more phenotypic indices, and there were nine SNP markers located in or adjacent to (within 500 kb) previously reported drought tolerance QTLs. These SNP led to our identification of 41 candidate genes related to drought tolerance in the germination stage. Conclusion The results of our study contribute to a deeper understanding of the genetic mechanisms underlying drought tolerance in soybeans at the germination stage, thereby providing a molecular basis for identifying useful soybean germplasm for breeding new drought-tolerant varieties.

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“…Prolonged drought has adverse effects on many aspects such as seed germination, root and leaf development, photosynthetic efficiency, stoma control, flowering period and reproduction, which gives destructive effects during pod filling and hence affect the yield (Delmer, 2005;Pushpavalli et al, 2015). The germination rate in soybean (Liu et al, 2020) and chickpea (Nisha et al, 2019;Ruth Muruiki, 2018) was severely reduced due to water deficit, however, in faba bean, DS commonly occurs at the seedling stage and significantly affects yield (Li et al, 2018).…”

Section: Effect Of Drought Stress On Legume Cropsmentioning

confidence: 99%

The Role of Arbuscular Mycorrhiza Fungi in Drought Tolerance in Legume Crops: A Review

Pandey

et al. 2022

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Legumes are low-cost but high-yielding crops, which are rich in dietary proteins, vitamins and minerals. Known as mycorrhizal plants, legumes are widely used as model organisms to explore the plant-microbe interactions, especially the symbiotic relationship between plants and rhizosphere microorganisms. Arbuscular mycorrhizal fungi (AMF), an important class of plant-associated microbes, can regulate many physiological and molecular responses of plants. To date, AMF has been commonly used as a bio-fertilizer, whose inoculation to host plants can confer tolerance to different abiotic stresses such as drought, salinity, heat and heavy metals. This review provides an overview of the responses of legumes to drought stress (DS), a summary of the mechanism of AMF-legume symbiosis and its effect on host plant drought tolerance, which taken together reveals the significance of this symbiosis in agriculture. The presented rich information will help understand how host plants benefit from AMF to increase drought tolerance while finetuning their metabolic pathways. The potential and importance of AMF as one of the most effective and environmental-friendly management approaches for enhancing legume crop productivity against DS is highlighted.

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Genome-wide association study of soybean seed germination under drought stress

Cited by 33 publications

References 82 publications

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Identification of drought-tolerance genes in the germination stage of soybean

The Role of Arbuscular Mycorrhiza Fungi in Drought Tolerance in Legume Crops: A Review

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