Journal article
Effects of light irradiance on stomatal regulation and growth of tomato
A O'Carrigan, E Hinde, N Lu, XQ Xu, H Duan, G Huang, M Mak, B Bellotti, ZH Chen
Environmental and Experimental Botany | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2014
Abstract
Light is not only a primary energy source for photosynthesis but also a vital regulator of numerous processes in plants. However, high light intensity always poses a dilemma for plants: to grow or to suffer. Combining physiological techniques at plant, tissue, and cellular levels, we investigated the regulation of stomatal behaviour and cytosolic Ca2+ concentration ([Ca2+]cyt) on growth of tomato plants under different light irradiance. Overall, plants exhibited a distinct short-term (days) and a long-term (weeks) response to high light by significantly increasing shoot biomass, leaf number, leaf temperature, vapour pressure deficit, stomatal index, aperture length and guard cell length. How..
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Funding Acknowledgements
We thank Renee Smith, Elizabeth Kabanoff, Sumedha Dharmaratne, Jennie Nelson and Rosemary Freeman for their technical assistance. We are in debt to Prof. Mike Blatt (University of Glasgow), A/Prof. Paul Holford and Dr. Pual Milham (University of Western Sydney) for their critical comments on this manuscript. This work was mainly supported by a University of Western Sydney Research Lectureship funding to Zhong-Hua Chen. Andrew O'Carrigan was additionally supported by a travel grant to University of California at Irvine (UCI) from the Department of Education, Employment, and Work Relations (DEEWR) of Australian Government.