Cicer arietinum, Cajanus cajan, Vigna radiata, and Phaseolus vulgaris are economically important legume crops with high nutritional value. They are negatively impacted globally by different biotic and abiotic stresses. Hyperosmolality-gated calcium-permeable channels (OSCA) have been characterized as osmosensors in Arabidopsis thaliana but have not previously reported in legumes. This study provides a genome-wide identification, characterization, and comparative analysis of OSCA genes in legumes. Our study identified and characterized 13 OSCA genes in C. cajan, V. radiata, P. vulgaris, and 12 in C. arietinum, classified into four distinct clades. We found evidence to suggest that the OSCAs might be involved in the interaction between hormone signalling pathways and stress signalling pathways. Furthermore, they play a major role in plant growth and development. The expression levels of the OSCAs vary under different stress conditions in a tissue-specific manner. Our study can be used to develop a detailed understanding of stress regulatory mechanisms of the OSCA gene family in legumes.

Cicer arietinum、Cajanus cajan、Vigna radiata和Phaseolus vulgaris是经济上重要的豆科作物，具有很高的营养价值。它们在全球范围内受到不同生物和非生物胁迫的负面影响。高渗透压门控钙渗透通道（OSCA）已被描述为拟南芥中的渗透传感器，但之前在豆科植物中尚未有报道。本研究提供了豆类OSCA基因的全基因组鉴定、表征和比较分析。我们的研究鉴定并表征了C. cajan、V. radiata、P. vulgaris中的 13 个OSCA基因和C. arietinum中的 12 个 OSCA基因，分为四个不同的分支。我们发现的证据表明OSCA可能参与激素信号通路和应激信号通路之间的相互作用。此外，它们在植物生长和发育中发挥着重要作用。OSCA的表达水平在不同的应激条件下以组织特异性方式变化。我们的研究可用于详细了解豆类OSCA基因家族的应激调节机制。