Progress in research on the photosynthetic characteristics of green non-leaf organs in plants

doi:10.11686/cyxb2021117

Abstract

Abstract:

Photosynthesis is one of the most important biochemical reactions in plants， and is a vital process for producing food and oxygen and purifying water resources for humans and animals. Efforts to improve photosynthesis in plants have traditionally focused on increasing photosynthesis in the leaves to increase yield. However， green non-leaf organs may also contribute to improving the overall photosynthetic capacity of plants. Compared with leaves， some non-leaf organs show a lower transpiration rate， higher water use efficiency， and stronger osmotic regulation ability under stress conditions， indicative of better stress resistance. Thus， non-leaf organs may make a considerable contribution to yield. In this paper， we review recent studies on photosynthesis in green non-leaf organs， including those on the photosynthetic performance of reproductive organs and stems， the methods used to evaluate the relative contribution rate， the influences of abiotic stress， the identification of photosynthetic pathways， and CO₂ fixation in non-leaf green organs. We discuss the advantages and disadvantages of the methods used to evaluate the contributions of these organs to photosynthesis in the whole plant， and outline future directions for research on the photosynthetic ability of non-leaf organs.

Key words: green non-leaf organs, photosynthesis, photosynthetic pathway, CO₂ re-fixation, photosynthetic contribution rate

Hui WANG, Hao-qi TIAN, Pei-sheng MAO, Wen-hui LIU, Zhi-feng JIA, Lu-ping WEI, Qing-ping ZHOU. Progress in research on the photosynthetic characteristics of green non-leaf organs in plants[J]. Acta Prataculturae Sinica, 2021, 30(10): 191-200.

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