Effects of potassium deficiency on antioxidant metabolism related to leaf senescence in cotton (Gossypium hirsutum L.)

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Effects of potassium deficiency on antioxidant metabolism related to leaf senescence in cotton (Gossypium hirsutum L.)

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作者：Wei Hu^a ; ^b ; Xiaobing Lv^a ; Jiashuo Yang^a ; Binglin Chen^a ; Wenqing Zhao^a ; Yali Meng^a ; Youhua Wang^a ; Zhiguo Zhou^a ; ^{giscott@njau.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Derrick M. Oosterhuis^b
关键词：CV ; coefficient of variance ; DPA ; days post anthesis ; LSCB ; leaf subtending the cotton boll ; Fv/Fm ; the primary light energy conversion efficiency of PS II in the dark ; ΦPSII ; quantum yield of PS II ; qP ; coefficient of photochemical quenching ; qN ; coefficient of non-photochemical quenching ; ROS ; reactive oxygen species ; MDA ; malondialdehyde ; H2O2 ; hydrogen peroxide ; ASC ; ascorbate ; GSH ; reduced glutathione ; CAT ; catalase ; POD ; peroxidase ; SOD ; superoxide dismutase ; APX ; ascorbate peroxidase ; DHA
刊名：Field Crops Research
出版年：2016
出版时间：May 2016
年：2016
卷：191
期：Complete
页码：139-149
全文大小：2803 K

文摘

•: K deficiency accelerated the senescence of plant and leaf in cotton.
•: Higher H₂O₂ accumulated in the K-deficient leaf despite higher activities of H₂O₂ scavenging enzymes.
•: ASC content increased under K deficiency because the ASC-GSH cycle was changed.
•: Boll weight, lint percentage, chlorophyll fluorescence, SOD and GR were more sensitive in Siza 3.

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