Spatial patterns and metabolic regulation of photosynthetic parameters during leaf senescence
نویسندگان
چکیده
منابع مشابه
Characterization of Photosynthetic Performance during Senescence in Stay-Green and Quick-Leaf-Senescence Zea mays L. Inbred Lines
The net photosynthetic rate, chlorophyll content, chlorophyll fluorescence and 820 nm transmission were investigated to explore the behavior of the photosynthetic apparatus, including light absorption, energy transformation and the photoactivities of photosystem II (PSII) and photosystem I (PSI) during senescence in the stay-green inbred line of maize (Zea mays) Q319 and the quick-leaf-senescen...
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Leaf senescence is a complicated developmental process that involves degenerative changes and nutrient recycling. The progress of leaf senescence is controlled by various environmental cues and plant hormones, including ethylene, jasmonic acid, salicylic acid, abscisic acid, cytokinins, and strigolactones. The production of strigolactones is induced in response to nitrogen and phosphorous defic...
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The leaf is the main photosynthetic organ of plants and its development a complex process governed by a combination of environmental factors and intrinsic and genetically regulated signals (Van Lijsebettens & Clarke, 1998). Usually, leaf ontogeny includes an early phase of increasing photosynthetic rates while the leaf is actively expanding, a mature phase where such rates peak and a senescence...
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Senescence is the last stage of development of a leaf, and is critical for plants’ evolutionary fitness as nutrient remobilization to other organs of a plant is achieved through this process. The leaf senescence process is believed to be under the control of a highly regulated genetic program which is associated with drastic changes of gene expression. Major breakthroughs in the molecular under...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2004
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.2004.00996.x