ArticleBMC plant biology2025
Linking key genes to the stay-green phenotype for climate-smart Triticum aestivum L.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Genomic and Physiological Insights Into Heat-Drought Tolerance in Wheat Through GWAS and Phenotypic Evaluation.Plant, cell & environment · 2026Article
- Nanoclay- and alginate-based soil amendments preserve photosynthetic function, delay senescence, and reduce oxidative damage in drought-stressed wheat.Frontiers in plant science · 2026Article
- Impact of Artemisia argyi and Stevia rebaudiana substrate composition on the nutritional quality, yield and mycelial growth of L. edodes addressing future food challenges.BMC plant biology · 2025Article
- From tradition to trait: stay-green alleles in SudaneseFrontiers in plant science · 2025Article
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Authors and funding
12 authors.
Funding
Abstract
Climate-induced heat and drought stress significantly reduce wheat productivity, posing a major challenge, identifying and developing tolerant wheat varieties is a key priority of modern breeding programs. The stay-green phenotype is characterized by sustained photosynthesis and extended grain-filling period under stress conditions, plays a pivotal role in enhancing tolerance. Here, we evaluated 4 commercial Australian wheat cultivars (Coota, Catapult, Beckom, and Sunmaster) in a greenhouse conditions, assessing their physiological, and agronomic traits under heat and combined heat-drought stress. Beckom demonstrated superior heat and combined heat-drought stress tolerance and recovery, maintaining 50% higher photosynthetic and 45% higher transpiration rates in comparison to the sensitive variety, as well as the highest stay-green trait, proline content, and yield. In contrast, Coota exhibited the most severe declines in physiological traits reflecting sensitivity. Expression levels of key genes involved in stomatal regulation, chlorophyll degradation, and heat shock responses in flag leaf tissue showed, significantly higher expression (1.9 and 1.7 folds) of TaGORK (Outward-Rectifying K+channel) gene critical for stomatal regulation is found in Beckom. In contrast, stress-sensitive Coota showed significantly higher expression of (4.5 and 0.68 folds) TaHPX (Haem Peroxidase) and (3.3 and 1.7 folds) TaLOX (Lipoxidase), indicating increased reactive oxygen species (ROS) production and chlorophyll degradation. This study underscores the complexity of physiology processes underlying the stay-green trait and suggests the involvement of multiple pathways including stomatal regulation and chlorophyll degradation. Also, we have identified physiological, biochemical, and genetic traits that may serve as potential phenotypic markers for marker-assisted selection (MAS) aimed at developing tolerant wheat varieties. While these traits show promise, further validation is necessary in future studies, to support sustainable food production in future.
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