Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141004, India.
Texas A&M University, AgriLife Research Center, Beaumont, TX, 77713, USA.
Planta. 2024 Apr 15;259(5):123. doi: 10.1007/s00425-024-04401-6.
Pigeonpea has potential to foster sustainable agriculture and resilience in evolving climate change; understanding bio-physiological and molecular mechanisms of heat and drought stress tolerance is imperative to developing resilience cultivars. Pigeonpea is an important legume crop that has potential resilience in the face of evolving climate scenarios. However, compared to other legumes, there has been limited research on abiotic stress tolerance in pigeonpea, particularly towards drought stress (DS) and heat stress (HS). To address this gap, this review delves into the genetic, physiological, and molecular mechanisms that govern pigeonpea's response to DS and HS. It emphasizes the need to understand how this crop combats these stresses and exhibits different types of tolerance and adaptation mechanisms through component traits. The current article provides a comprehensive overview of the complex interplay of factors contributing to the resilience of pigeonpea under adverse environmental conditions. Furthermore, the review synthesizes information on major breeding techniques, encompassing both conventional methods and modern molecular omics-assisted tools and techniques. It highlights the potential of genomics and phenomics tools and their pivotal role in enhancing adaptability and resilience in pigeonpea. Despite the progress made in genomics, phenomics and big data analytics, the complexity of drought and heat tolerance in pigeonpea necessitate continuous exploration at multi-omic levels. High-throughput phenotyping (HTP) is crucial for gaining insights into perplexed interactions among genotype, environment, and management practices (GxExM). Thus, integration of advanced technologies in breeding programs is critical for developing pigeonpea varieties that can withstand the challenges posed by climate change. This review is expected to serve as a valuable resource for researchers, providing a deeper understanding of the mechanisms underlying abiotic stress tolerance in pigeonpea and offering insights into modern breeding strategies that can contribute to the development of resilient varieties suited for changing environmental conditions.
木豆具有促进可持续农业和适应不断变化的气候变化的潜力；了解热胁迫和干旱胁迫耐受性的生物生理和分子机制对于培育具有适应能力的品种至关重要。木豆是一种重要的豆科作物，具有适应不断变化的气候情景的潜在能力。然而，与其他豆科植物相比，木豆对非生物胁迫耐受性的研究有限，特别是对干旱胁迫（DS）和热胁迫（HS）。为了弥补这一空白，本综述深入探讨了控制木豆对 DS 和 HS 响应的遗传、生理和分子机制。它强调了需要了解这种作物如何抵御这些胁迫，并通过组成性状表现出不同类型的耐受性和适应机制。本文全面概述了导致木豆在不利环境条件下具有弹性的复杂因素相互作用。此外，该综述综合了主要的育种技术信息，包括常规方法和现代分子组学辅助工具和技术。它强调了基因组学和表型组学工具的潜力及其在增强木豆适应性和弹性方面的关键作用。尽管在基因组学、表型组学和大数据分析方面取得了进展，但木豆对干旱和耐热性的复杂性需要在多组学水平上进行持续探索。高通量表型分析（HTP）对于深入了解基因型、环境和管理实践（GxExM）之间复杂的相互作用至关重要。因此，在育种计划中整合先进技术对于开发能够应对气候变化挑战的木豆品种至关重要。本综述预计将成为研究人员的宝贵资源，提供对木豆非生物胁迫耐受性的机制的更深入理解，并为现代育种策略提供见解，这些策略有助于开发适合不断变化的环境条件的具有弹性的品种。
