Ethephon treatment reduced Mondo grass (Ophiopogon japonicus) gas exchange rate and gene expression of Rbcs

Abstract

Supplementary Table 2. The most abundant genes in the ethephon treated Ophiopogon japonicus cDNA library.

Ethylene involvement in the regulation of heat stress tolerance in plants

“…Heat stress also greatly affects Rubisco levels and activity (Salvucci and Crafts-Brandner 2004;Demirevska-Kepova et al 2005;Sharkey 2005;Perdomo et al 2017) which can also be mediated by ET (Jespersen and Huang 2015). ET plays a crucial role in progressing senescence and a decrease of Rubisco content (Young et al 2004;Martínez et al 2008;Liu et al 2019;Zheng et al 2020). This was confirmed by the application of ET inhibitor AVG which elevated Rubisco and Rubisco activase protein levels under heat stress (35/30 °C) in bentgrass suggesting the role of ET in promoting heatinduced senescence (Jespersen and Huang 2015).…”

“…Moreover, heat stress also results in loss of photosynthetic pigments and efficiency, abnormal organization of thylakoids, disruption of the electron transport chains in mitochondria and chloroplasts, decreased production of photo-assimilates, and depletion of carbohydrate reserves (Khan et al 2013;Tan et al 2011;Cortleven et al 2019;Paul et al 2020). Furthermore, inhibition of carbohydrate metabolism induced by heat stress results in impairment of plant reproductive events such as stamen and pollen development, ovule fertilization, fruit set, seed development, and loss of grain yield in a wide variety of crops (Kotak et al 2007;Wahid et al 2007;Schauberger et al 2017;Ozga et al 2017;Liu et al 2019).…”