J Wang, Y L Wang, D Y Wang, J X Huang, Y B Liu, M Zhu, F H Li
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引用次数: 0
摘要
缩写:6-BA - 6-苄基腺嘌呤;Chl -叶绿素;C -细胞间co2浓度;DM—干质量;DMSO -二甲基亚砜;E——蒸腾速率;乙二胺四乙酸;FM—新鲜质量;F v /F m - PSII的最大量子产率;G -气孔导度;NPQ—非光化学猝灭系数;磷酸烯醇丙酮酸羧化酶;磷氮净光合速率;q P—光化学猝灭系数;SPS -蔗糖磷酸合酶;SS -蔗糖合酶;Φ PSII - PSII光化学的有效量子产率。感谢国家重点研发计划项目(2017YFD0300700、2018YFD0300300、2017YFD0101103)的资助。†这些作者对这项研究贡献相同。利益冲突:作者声明他们没有利益冲突。是一种人工合成的细胞分裂素，在调节植物对非生物胁迫的反应中起重要作用。以2个糯玉米自交系为材料，研究外源6-BA对涝渍胁迫下玉米光合能力和叶片超微结构的缓解作用。结果表明，涝渍胁迫破坏了糯玉米幼苗的光合作用。外源6-BA可缓解涝渍胁迫对植株的抑制作用。涝渍条件下，6-BA处理有利于保持植株叶绿体结构的完整性，保持较高的光合色素含量。增加了光合能力，促进了气孔的开放。此外，外源6-BA促进了光合活性和碳水化合物的积累。结果表明，6-BA可通过调节光合活性减轻涝渍胁迫对玉米幼苗的不利影响。
Mitigative effect of 6-benzyladenine on photosynthetic capacity and leaf ultrastructure of maize seedlings under waterlogging stress.
6-Benzyladenine (6-BA) is an artificial synthetic cytokinin, which plays an important role in regulating plant responses to abiotic stress. This study aimed to investigate the mitigative effect of exogenous 6-BA on photosynthetic capacities and leaf ultrastructure under waterlogging stress using two waxy corn inbred lines. The results showed that waterlogging stress disrupted the photosynthesis of waxy corn seedlings. However, exogenous 6-BA alleviated the inhibition caused by waterlogging stress. Under the waterlogging conditions, 6-BA treatment of plants helped preserve the structural integrity of the chloroplasts and retain higher contents of photosynthetic pigments. It also increased the photosynthetic capacity and promoted the openness of stomatal pores. Moreover, exogenous 6-BA promoted photosynthetic activities and the accumulation of carbohydrates. The results revealed that the detrimental effects of waterlogging stress on maize seedlings can be alleviated by 6-BA via modulating photosynthetic activities.
期刊介绍：
Photosynthetica publishes original scientific papers and brief communications, reviews on specialized topics, book reviews and announcements and reports covering wide range of photosynthesis research or research including photosynthetic parameters of both experimental and theoretical nature and dealing with physiology, biophysics, biochemistry, molecular biology on one side and leaf optics, stress physiology and ecology of photosynthesis on the other side.
The language of journal is English (British or American). Papers should not be published or under consideration for publication elsewhere.
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