نهمین کنفرانس ملی و اولین کنفرانس بین المللی فیزیولوژی گیاهی

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کد مقاله 1231

عنوان Regulation of photosynthetic physiology in Arthrospira under light and nutrient stresses: from photoinhibition to metabolic acclimation

نویسندگان Azin Ghafarizadeh - Seyyed Mansour Seyyednejad

چکیده Arthrospira (Spirulina), a filamentous cyanobacterium, exhibits remarkable photosynthetic plasticity that enables survival under fluctuating light and nutrient conditions. This review synthesizes current knowledge on the physiological and metabolic regulation of photosynthesis in Arthrospira under light and nutrient stresses, highlighting mechanisms of short-term photoprotection, long-term metabolic acclimation, and the integration of multiple environmental signals. The interplay between nitrogen, phosphorus, and iron availability with photochemical processes is discussed, emphasizing the coordinated adjustment of photosystem stoichiometry, antenna size, and carbon metabolism. Key knowledge gaps are identified, including molecular signaling networks, timescale integration of acclimation responses, and ecologically relevant multi-stress interactions. Addressing these gaps will advance our understanding of cyanobacterial photosynthetic regulation and inform both ecological studies and biotechnological applications.

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