کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6452586 1418068 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deficiency in phytochrome A alters photosynthetic activity, leaf starch metabolism and shoot biomass production in tomato
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Deficiency in phytochrome A alters photosynthetic activity, leaf starch metabolism and shoot biomass production in tomato
چکیده انگلیسی


- Photosynthetic electron transport is inhibited in chloroplasts of tomato phyA.
- Concomitant decrease in plant growth and shoot biomass production is observed.
- Transitory leaf starch metabolism is also altered in mutant plants.
- Possible role for phy A in photosynthetic functions of tomato

Photosynthesis is a key process that promotes plant growth and development. Light provides photosynthetic organisms with a major source of energy to fix carbon dioxide into organic matter. Of the entire visible light spectrum, red/blue light are known to maximise photosynthetic performance and are thus essential for proper growth and development of plants. Red and blue light stimulate synthesis of chlorophyll and orchestrate the positioning of leaves and chloroplasts for optimal utilisation of light, both of which are critical for photosynthesis. The response of plants to external light cues is accomplished via finely tuned complex photoreceptors and signaling mechanisms which enable them to continually monitor light availability and quality for optimal utilisation of light energy towards enhancing their growth. Higher plants contain a suite of photoreceptor proteins that allow them to perceive red, blue/UV-A and UV-B light. Analyses of the phyA mutant of tomato deficient in the red-light photoreceptor phytochrome A (phyA), showed reduced photosynthetic activity of isolated chloroplasts along with decreased shoot biomass in adult plants. The regulation of leaf transitory starch in the mutant was also altered as compared to the wild type (cv Moneymaker). Our results suggest a possible role for phyA in these processes in tomato.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 165, December 2016, Pages 157-162
نویسندگان
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