首页|Enhanced photosynthetic efficiency by nitrogen-doped carbon dots via plastoquinone-involved electron transfer in apple

Enhanced photosynthetic efficiency by nitrogen-doped carbon dots via plastoquinone-involved electron transfer in apple

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Artificially enhancing photosynthesis is critical for improving crop yields and fruit qualities.Nanomaterials have demonstrated great potential to enhance photosynthetic efficiency;however,the mechanisms underlying their effects are poorly understood.This study revealed that the electron transfer pathway participated in nitrogen-doped carbon dots(N-CDs)-induced photosynthetic efficiency enhancement(24.29％),resulting in the improvements of apple fruit qualities(soluble sugar content:11.43％)in the orchard.We also found that N-CDs alleviated mterf5 mutant-modulated photosystem Ⅱ(PSⅡ)defects,but not psa3 mutant-modulated photosystem Ⅰ(PSI)defects,suggesting that the N-CDs-targeting sites were located between PSⅡ and PSI.Measurements of chlorophyll fluorescence parameters suggested that plastoquinone(PQ),the mobile electron carrier in the photosynthesis electron transfer chain(PETC),was the photosynthesis component that N-CDs targeted.In vitro experiments demonstrated that plastoquinone-9(PQ-9)could accept electrons from light-excited N-CDs to produce the reduced plastoquinone 9(PQH2-9).These findings suggested that N-CDs,as electron donors,offer a PQ-9-involved complement of PETC to improve photosynthesis and thereby fruit quality.Our study uncovered a mechanism by which nanomaterials enhanced plant photosynthesis and provided some insights that will be useful in the design of efficient nanomaterials for agricultural/horticultural applications.

Xiuli Jing、Yankai Liu、Xuzhe Liu、Yi Zhang、Guanzhu Wang、Fei Yang、Yani Zhang、Dayong Chang、Zhen-Lu Zhang、Chun-Xiang You、Shuai Zhang、Xiao-Fei Wang

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Apple Technology Innovation Center of Shandong Province,Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production,National Key Laboratory of Wheat Improvement,College of Horticulture Science and Engineering,Shandong Agricultural University,Taian 271018,Shandong,China

Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs,College of Chemistry and Material Science,Shandong Agricultural University,Taian 271018,Shandong,China

College of Life Science,Shandong Agricultural University,Taian 271018,Shandong,China

Yantai Goodly Biotechnology Co.,Ltd,Yantai 264000,Shandong,China

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major basic research projects of Shandong Province国家自然科学基金国家自然科学基金山东省自然科学基金China Agriculture Research System of MOF and MARA

ZR2020ZD432220706731972378ZR2021MC073CARS-27

2024

10.1093/hr/uhae016

园艺研究(英文)

园艺研究(英文)

CSTPCD
ISSN：
年,卷(期)：2024.11(3)
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