59. 土壌乾燥条件下での根寄生雑草ストライガとソルガムのガス交換と気孔反応(口頭発表,植物化学調節学会第46回大会) 59. Gas exchange and stomatal response of root hemi-parasite Striga hermonthica and sorghum under soil water stress

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著者

    • 井上 知恵 Inoue Tomoe
    • 鳥取大・乾燥地研究センター:JST/JICA, SATREPS Arid Land Research Center, Tottori Univ.:JST/JICA, SATREPS
    • 山内 靖雄 Yamauchi Yasuo
    • 神戸大院・農・生命機能科学:JST/JICA, SATREPS Agrobioscience, Grad. School Agric. Sci., Kobe Univ.:JST/JICA, SATREPS
    • Eltayeb Amani Hamad
    • スーダン科学技術大学:JST/JICA, SATREPS Sudan Univ. of Science and Technology:JST/JICA, SATREPS
    • 鮫島 啓彰 Samejima Hiroaki
    • 神戸大院・農・生命機能科学:JST/JICA, SATREPS Agrobioscience, Grad. School Agric. Sci., Kobe Univ.:JST/JICA, SATREPS
    • Babiker Abdel Gabar
    • スーダン科学技術大学:JST/JICA, SATREPS Sudan Univ. of Science and Technology:JST/JICA, SATREPS

抄録

A pot experiment was conducted to investigate the effects of soil water stress on gas exchange and stomatal response of the upper fully expanded leaf of the root parasitic weed Striga hermonthica and that of its sorghum host. Photosynthetic rate of S. hermonthica was less affected by water stress than sorghum, but the ratio of respiration rate to photosynthetic rate increased considerably under water stress. Thus, under water stress, growth of S. hermonthica may rely more on heterotrophic carbon from host to compensate the low autotrophic carbon gain. Water stress-induced reductions in transpiration rate and stomatal conductance were more severe in infected sorghum than in S. hermonthica. Water stress-induced reduction in stomatal aperture of the leaf was greater in infected sorghum than in S. hermonthica. These results indicated that higher transpiration rate of S. hermonthica under water stress, achieved through greater stomatal aperture, may be related to maintenance of water and solute movement from the host to the parasite.

収録刊行物

  • 植物化学調節学会研究発表記録集   [巻号一覧]

    植物化学調節学会研究発表記録集 (46), 75, 2011-10-03  [この号の目次]

    植物化学調節学会

各種コード

  • NII論文ID(NAID)
    110008902468
  • NII書誌ID(NCID)
    AN10348274
  • 本文言語コード
    JPN
  • ISSN
    09191887
  • データ提供元
    NII-ELS 
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