1.
Initiation, Progression, and Genetic Manipulation of Leaf Senescence.
Ali, A, Gao, X, Guo, Y
Methods in molecular biology (Clifton, N.J.). 2018;:9-31
Abstract
As a representative form of plant senescence, leaf senescence has received the most attention during the last two decades. In this chapter we summarize the initiation of leaf senescence by various internal and external signals, the progression of senescence including switches in gene expression, as well as changes at the biochemical and cellular levels during leaf senescence. Impacts of leaf senescence in agriculture and genetic approaches that have been used in manipulating leaf senescence of crop plants are discussed.
2.
[Environmental regulation of Citrus photosynthesis].
Hu, M, Guo, Y, Shen, Y, Zhang, L
Ying yong sheng tai xue bao = The journal of applied ecology. 2006;(3):535-40
Abstract
Recent researches on the mechanisms of environmental regulation of citrus photosynthesis showed that the photoinhibition of photosynthesis induced by strong light or ultraviolet radiation was related to the inactiveness of PS II reaction center, and photorespiration and xanthophyll cycle played a pivotal role in protecting photosynthetic apparatus. Under temperature stress, lower CO2 assimilation was mainly due to the decrease of RuBPCase activity and the inactiveness of PS II reaction center, and species sensitivity existed. The decline of photosynthetic CO2 assimilation under high water stress was due to non-stomatal limitation, while that under low water stress was due to stomatal limitation. The citrus growth, yield and quality could be increased by increasing photosynthesis under elevated CO2 concentration. The mechanisms of photosynthesis regulation by minerals such as nitrogen, phosphorus, sulfur and iron, as well as the effects of salt stress on photosynthesis were discussed, and the directions for future research were suggested.