Chlorophyll fluorescence, spectral properties, and pigment composition of galls on leaves of machilus thunbergii

Meng Yuan Huang, Kuan Hung Lin, Man Miao Yang, Hsueh Mei Chou, Chi Ming Yang, Yung Ta Chang

研究成果: 雜誌貢獻期刊論文同行評審

17 引文 斯高帕斯(Scopus)

摘要

The objectives of this study were to characterize the fluorescence and spectral reflectance patterns of galled and nongalled portions of leaves of Machilus thunbergii and to understand changes in metabolism subsequent to gall development on the leaf surface. The results showed that the reflectance values of galls at 280 nm (R280) and 320 nm (R320) were greater than those for normal leaves; this was hypothesized to minimize ultraviolet light damage. The lower photochemical reflectance index and higher red-green ratio in galls than leaves indicated that xanthophyll cycle pigments and the anthocyanin content were higher in galls than in leaves. In contrast, the lower adjusted normalized difference vegetation index (aNDVI) and cold hard band for galls indicated lower maximum quantum efficiencies for photosystem II (Fv/Fm), chlorophyll contents, and pigment-protein complexes in galls than in leaves. Overall, the fluorescence and reflectance analyses suggested that insect infestations reduce photosynthetic efficiency. In addition, there were highly significant and positive relationships between Fv/Fm and both the photosynthetic reflectance index and the cold hard band, indicating that gall infections induced physiological changes that were detected using both reflectance spectra and fluorescence.

原文英語
頁(從 - 到)323-329
頁數7
期刊International Journal of Plant Sciences
172
發行號3
DOIs
出版狀態已發佈 - 2011 三月 1

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 植物科學

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