桐花树幼苗光合和呼吸代谢对水淹胁迫的响应

Q948.1; 红树林是热带和亚热带海岸潮间带特有的木本植物群落,具有非常重要的生态学意义与社会经济价值.通过人工潮汐系统(0 h、6 h、12 h、18 h),研究桐花树光合和呼吸代谢对水淹胁迫的响应.结果表明,水淹胁迫显著降低了桐花树 Fv/Fm,此外随着水淹时间的延长,各处理组 Yield 尽管未见显著性差异,但呈现下降的趋势.水淹胁迫同样会导致桐花树根系ATP含量下降.TCA呼吸分析结果进一步表明,水淹胁迫显著降低了桐花树根系TCA呼吸速率,琥珀酸脱氢酶(SDH)、苹果酸脱氢酶(MDH)的活性在水淹胁迫下同样受到抑制.此外,水淹胁迫明显增加了桐花树乙醇脱氢酶(ADH)、乳酸脱氢酶(LD...

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Published in生态科学 Vol. 43; no. 3; pp. 20 - 25
Main Authors 马晓宇, 李昌达, 王友绍, 赵艳, 程皓
Format Journal Article
LanguageChinese
Published 热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广州 510301%温州市洞头区海洋与渔业发展研究中心,温州 325700%热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广州 510301%齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006 2024
齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006
Subjects
红树林
Aegiceras corniculatum
TCA respiration
Mangrove
Anaerobic respiration
桐花树
TCA呼吸
waterlogging
水淹
无氧呼吸
Online AccessGet full text
ISSN1008-8873
DOI10.14108/j.cnki.1008-8873.2024.03.003

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Abstract Q948.1; 红树林是热带和亚热带海岸潮间带特有的木本植物群落,具有非常重要的生态学意义与社会经济价值.通过人工潮汐系统(0 h、6 h、12 h、18 h),研究桐花树光合和呼吸代谢对水淹胁迫的响应.结果表明,水淹胁迫显著降低了桐花树 Fv/Fm,此外随着水淹时间的延长,各处理组 Yield 尽管未见显著性差异,但呈现下降的趋势.水淹胁迫同样会导致桐花树根系ATP含量下降.TCA呼吸分析结果进一步表明,水淹胁迫显著降低了桐花树根系TCA呼吸速率,琥珀酸脱氢酶(SDH)、苹果酸脱氢酶(MDH)的活性在水淹胁迫下同样受到抑制.此外,水淹胁迫明显增加了桐花树乙醇脱氢酶(ADH)、乳酸脱氢酶(LDH)活性,且在水淹 18h达到最大值.研究表明,尽管无氧呼吸可一定程度上缓解水淹胁迫所导致的产能匮乏,但过度水淹会直接扰乱其正常的光合作用及其ATP产能效率.
AbstractList Q948.1; 红树林是热带和亚热带海岸潮间带特有的木本植物群落,具有非常重要的生态学意义与社会经济价值.通过人工潮汐系统(0 h、6 h、12 h、18 h),研究桐花树光合和呼吸代谢对水淹胁迫的响应.结果表明,水淹胁迫显著降低了桐花树 Fv/Fm,此外随着水淹时间的延长,各处理组 Yield 尽管未见显著性差异,但呈现下降的趋势.水淹胁迫同样会导致桐花树根系ATP含量下降.TCA呼吸分析结果进一步表明,水淹胁迫显著降低了桐花树根系TCA呼吸速率,琥珀酸脱氢酶(SDH)、苹果酸脱氢酶(MDH)的活性在水淹胁迫下同样受到抑制.此外,水淹胁迫明显增加了桐花树乙醇脱氢酶(ADH)、乳酸脱氢酶(LDH)活性,且在水淹 18h达到最大值.研究表明,尽管无氧呼吸可一定程度上缓解水淹胁迫所导致的产能匮乏,但过度水淹会直接扰乱其正常的光合作用及其ATP产能效率.
Abstract_FL Mangrove forest is a special woody plant community that occurs in the intertidal zone of tropical and subtropical coasts,possessing enormous economic and ecological value.In this study,artificial tidal systems(0 h,6 h,12 h,18 h)were employed to evaluate the effects of waterlogging on photosynthesis and respiration metabolism of the seedlings of Aegiceras corniculatum.The results showed that the values of Fv/Fm were significantly decreased under waterlogging.In addition,with the elongation of tidal flooding,the data of Yield showed a downward trend although there was no significant difference among the treatments.Waterlogging also significantly decreased the contents of ATP in the roots of Aegiceras corniculatum.The results of TCA respiration further showed that waterlogging significantly reduced TCA respiratory rate,coinciding with the inhibitions of succinate dehydrogenase(SDH)and malate dehydrogenase(MDH)activities.On the contrary,the activities of alcohol dehydrogenase(ADH)and lactate dehydrogenase(LDH)were significantly promoted by waterlogging,and with the maximum activities at the highest waterlogging rhythm(18h).The data of the present study indicated that although anaerobic respiration might partly alleviate the ATP deficiency caused by waterlogging,excessive waterlogging can still disrupt the normal photosynthesis and ATP productivity efficiency.
Author 马晓宇
李昌达
王友绍
程皓
赵艳
AuthorAffiliation 齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006;热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广州 510301%温州市洞头区海洋与渔业发展研究中心,温州 325700%热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广州 510301%齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006
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Author_FL CHENG Hao
LI Changda
WANG Youshao
ZHAO Yan
MA Xiaoyu
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DocumentTitle_FL Responses of photosynthesis and respiratory metabolisms to waterlogging in Aegiceras corniculatum
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Keywords 红树林
Aegiceras corniculatum
TCA respiration
Mangrove
Anaerobic respiration
桐花树
TCA呼吸
waterlogging
水淹
无氧呼吸
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Publisher 热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广州 510301%温州市洞头区海洋与渔业发展研究中心,温州 325700%热带海洋环境国家重点实验室,中国科学院南海海洋研究所,广州 510301%齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006
齐齐哈尔大学生命科学与农林学院,齐齐哈尔 161006
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Title 桐花树幼苗光合和呼吸代谢对水淹胁迫的响应
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