Journal of Integrative Agriculture ›› 2013, Vol. 12 ›› Issue (11): 2056-2064.DOI: 10.1016/S2095-3119(13)60343-3

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Characteristics of Photosystem II Behavior in Cotton (Gossypium hirsutum L.) Bract and Capsule Wall

  href="https://www.chinaagrisci.com/Jwk_zgnykxen/CN/article/advancedSearchResult.do?searchSQL=(((ZHANG Ya-li[Author]) AND 1[Journal]) AND year[Order])" target="_blank">ZHANG Ya-li, href="https://www.chinaagrisci.com/Jwk_zgnykxen/CN/article/advancedSearchResult.do?searchSQL=(((LUO Hong-hai[Author]) AND 1[Journal]) AND year[Order])" target="_blank">LUO Hong-hai, href="https://www.chinaagrisci.com/Jwk_zgnykxen/CN/article/advancedSearchResult.do?searchSQL=(((HU Yuan-yuan[Author]) AND 1[Journal]) AND year[Order])" target="_blank">HU Yuan-yuan, href="https://www.chinaagrisci.com/Jwk_zgnykxen/CN/article/advancedSearchResult.do?searchSQL=(((Reto J Strasser[Author]) AND 1[Journal]) AND year[Order])" target="_blank">Reto J Strasser,  ZHANG Wang-feng   

  1. 1.Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group/Agricultural College, Shihezi University, Shihezi 832003,P.R.China
    2.Bioenergetics Laboratory, University of Geneva, Jussy-Geneva CH-1254, Witzerland
    3.Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, P.R.China
    4.North West University, Campus Pochefstroom 2520, South Africa
  • 收稿日期:2012-10-12 出版日期:2013-11-01 发布日期:2013-12-08
  • 通讯作者: Correspondence ZHANG Wang-feng, Tel: +86-993-2057326, Fax: +86-993-2057999, E-mail: zwf_shzu@163.com
  • 基金资助:

    This study was fi nancially supported by the National Natural Science Foundation of China (U1203283, 31260295), the National Key Technologies R&D Program of China (2007BAD44B07) and the Special Launching Funds for High-Level Talents of Shihezi University, China (RCZX201005).

Characteristics of Photosystem II Behavior in Cotton (Gossypium hirsutum L.) Bract and Capsule Wall

 ZHANG Ya-li, LUO Hong-hai, HU Yuan-yuan, Reto J Strasser,  ZHANG Wang-feng   

  1. 1.Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group/Agricultural College, Shihezi University, Shihezi 832003,P.R.China
    2.Bioenergetics Laboratory, University of Geneva, Jussy-Geneva CH-1254, Witzerland
    3.Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, P.R.China
    4.North West University, Campus Pochefstroom 2520, South Africa
  • Received:2012-10-12 Online:2013-11-01 Published:2013-12-08
  • Contact: Correspondence ZHANG Wang-feng, Tel: +86-993-2057326, Fax: +86-993-2057999, E-mail: zwf_shzu@163.com
  • Supported by:

    This study was fi nancially supported by the National Natural Science Foundation of China (U1203283, 31260295), the National Key Technologies R&D Program of China (2007BAD44B07) and the Special Launching Funds for High-Level Talents of Shihezi University, China (RCZX201005).

摘要: Though bract and capsule wall of boll in cotton (Gossypium hirsutum L.) have different photosynthetic capacities, the features of photosystem II (PS II) in these organs are scarce. In this paper, chlorophyll a fl uorescence emission was measured to investigate the difference in the photosynthetic apparatus of dark-acclimated (JIP-test) and light-acclimated (light-saturation pulse method) bract and capsule wall. Compared with leaves, the oxygen evolving system of non-foliar organs had lower effi ciency. The pool size of PS II electron acceptor of non-foliar organs was small, and the photochemical activity of leaves was higher than that of the bract and capsule wall. In regard to the photosystem I (PS I) electron acceptor side, the pool size of end electron acceptors of leaves was larger, and the quantum yield of electron transport from QA (PS II primary plastoquinone acceptor) further than the PS I electron acceptors of leaves was higher than that of bract and capsule wall. In all green organs, the actual quantum yield of photochemistry decreased with light. The thermal dissipation fraction of light absorbed by the PS II antennae was the highest in bract and the lowest in capsule wall relative to leaves. Compared with leaves, capsule wall was characterized by less constitutive thermal dissipation and via dissipation as fl uorescence emission. These results suggested that lower PS II photochemical activity in non-foliar organs may be result from limitations at the donor side of PS II and the acceptor sides of both photosystems.

关键词: cotton , non-foliar , photosynthesis , chlorophyll fl uorescence , JIP-test

Abstract: Though bract and capsule wall of boll in cotton (Gossypium hirsutum L.) have different photosynthetic capacities, the features of photosystem II (PS II) in these organs are scarce. In this paper, chlorophyll a fl uorescence emission was measured to investigate the difference in the photosynthetic apparatus of dark-acclimated (JIP-test) and light-acclimated (light-saturation pulse method) bract and capsule wall. Compared with leaves, the oxygen evolving system of non-foliar organs had lower effi ciency. The pool size of PS II electron acceptor of non-foliar organs was small, and the photochemical activity of leaves was higher than that of the bract and capsule wall. In regard to the photosystem I (PS I) electron acceptor side, the pool size of end electron acceptors of leaves was larger, and the quantum yield of electron transport from QA (PS II primary plastoquinone acceptor) further than the PS I electron acceptors of leaves was higher than that of bract and capsule wall. In all green organs, the actual quantum yield of photochemistry decreased with light. The thermal dissipation fraction of light absorbed by the PS II antennae was the highest in bract and the lowest in capsule wall relative to leaves. Compared with leaves, capsule wall was characterized by less constitutive thermal dissipation and via dissipation as fl uorescence emission. These results suggested that lower PS II photochemical activity in non-foliar organs may be result from limitations at the donor side of PS II and the acceptor sides of both photosystems.

Key words: cotton , non-foliar , photosynthesis , chlorophyll fl uorescence , JIP-test