The plants growing in high altitude Ladakh Himalayas experience significant temperature variations during their vegetative growth. In this study, the photosynthetic response of Lepidium latifolium L., a sleeper weed, was investigated to short term temperature fluctuations. This plant maintained photosynthesis at higher temperatures by modulating the photochemical efficiency of photosystem II. Various physiological mechanisms including VpdL dependent and independent stomatal opening, the increase in the energy fluxes, closing of the reaction centers, and increase in the chlorophyll content play a crucial role in temperature tolerance. An efficient and dynamic non-photochemical quenching involving both zeaxanthin and PsbS dissipated the excess energy during higher temperatures. The degradation of the photosynthetic apparatus is compensated by increased expression of the subunit proteins. Other genetic elements that help in the repair and stabilization of the apparatus were also induced. Allyl isothiocyanate dependent modulation of the stomatal aperture acts as a swift response mechanism for the CO₂ exchange and evapotranspirational requirements. Collectively, these processes help mitigate the harmful effects of high temperature on the photosynthetic process. This data will help to strategize the spread of Lepidium latifolium in an ecologically sensitive Ladakh Himalayas during the climate change scenario.

在高海拔拉达克喜马拉雅山生长的植物在营养生长过程中会经历明显的温度变化。在这项研究中，la叶草的光合作用反应研究了L.，一种睡眠杂草，以了解短期温度波动。该植物通过调节光系统II的光化学效率，在较高的温度下保持光合作用。各种生理机制，包括依赖和独立于VpdL的气孔开放，能量通量的增加，反应中心的关闭以及叶绿素含量的增加，对温度耐受性起着至关重要的作用。玉米黄质和PsbS的有效和动态的非光化学猝灭耗散了较高温度下的多余能量。通过增加亚基蛋白的表达来补偿光合装置的降解。还诱导了其他有助于仪器修复和稳定的遗传因素。₂交换和蒸散要求。这些过程共同帮助减轻了高温对光合作用过程的有害影响。这些数据将有助于在气候变化情景中，对在生态敏感的拉达克喜马拉雅山中的la叶草进行传播。