A role for differential Rubisco activase isoform expression in C 4 bioenergy grasses at high temperature
نویسندگان
چکیده
منابع مشابه
Rubisco activase constrains the photosynthetic potential of leaves at high temperature and CO2.
Net photosynthesis (Pn) is inhibited by moderate heat stress. To elucidate the mechanism of inhibition, we examined the effects of temperature on gas exchange and ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) activation in cotton and tobacco leaves and compared the responses to those of the isolated enzymes. Depending on the CO(2) concentration, Pn decreased when temperatures exceed...
متن کاملThe effects of Rubisco activase on C4 photosynthesis and metabolism at high temperature.
The activation of Rubisco in vivo requires the presence of the regulatory protein Rubisco activase. This enzyme facilitates the release of sugar phosphate inhibitors from Rubisco catalytic sites thereby influencing carbamylation. T(1) progeny of transgenic Flaveria bidentis (a C(4) dicot) containing genetically reduced levels of Rubisco activase were used to explore the role of the enzyme in C(...
متن کاملRubisco, Rubisco activase, and global climate change.
Global warming and the rise in atmospheric CO(2) will increase the operating temperature of leaves in coming decades, often well above the thermal optimum for photosynthesis. Presently, there is controversy over the limiting processes controlling photosynthesis at elevated temperature. Leading models propose that the reduction in photosynthesis at elevated temperature is a function of either de...
متن کاملCharacterization of Rubisco Activase Genes in Maize: An a-Isoform Gene Functions alongside a b-Isoform Gene1[W][OPEN]
Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China (Z.Yi., Z.Z., D.D., Q.G., Y.W., Z.Ya., Y.B., C.X.); National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, Ch...
متن کاملCharacterization of Rubisco activase genes in maize: an α-isoform gene functions alongside a β-isoform gene.
Rubisco activase (RCA) catalyzes the activation of Rubisco in vivo and plays a crucial role in regulating plant growth. In maize (Zea mays), only β-form RCA genes have been cloned and characterized. In this study, a genome-wide survey revealed the presence of an α-form RCA gene and a β-form RCA gene in the maize genome, herein referred to as ZmRCAα and ZmRCAβ, respectively. An analysis of genom...
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ژورنال
عنوان ژورنال: GCB Bioenergy
سال: 2020
ISSN: 1757-1693,1757-1707
DOI: 10.1111/gcbb.12768