Effect of arbuscular mycorrhizal inoculation on water status and photosynthesis of <i>Populus cathayana</i> males and females under water stress

Physiologia Plantarum - Tập 155 Số 2 - Trang 192-204 - 2015
Li Zhen1, Na Wu2, Ting Liu1, Hui Chen2, Ming Tang2
1College of Life Science Northwest A&amp;F University Yangling China
2College of Forestry, Northwest A&F University, Yangling, China

Tóm tắt

Drought is one of the most serious environmental limitations for poplar growth. Although the ways in which plants deal with water stress and the effects of arbuscular mycorrhizal (AM) formation have been well documented, little is known about how the male and female plants of Populus cathayana respond to drought and AM formation. We also aimed to investigate the potential role of AM fungi in maintaining gender balance. We tested the impact of drought and AM formation on water status and photosynthesis. The results suggested that both sexes showed similar responses to water stress: drought decreased the growth of stem length (GSL), growth of ground diameter (GGD), relative water content (RWC), increased the relative electrolyte leakage (REL), and limited the photosynthesis and chlorophyll fluorescence indexes. However, the responses of the two sexes to drought and AM formation differed to some extent. AM formation had positive effects on RWC, photosynthesis and the intrinsic water use efficiency (WUEi) but negative effects on the REL of males and females, especially under drought. AM formation enhanced the maximum quantum yield of photosystem II (PSII) (Fv/Fm), the actual quantum yield of PSII (ΦPSII), non‐photochemical quenching (qN) and photochemical quenching (qP) under drought conditions, and had no significant effects under well‐watered conditions except on the qP of males. Principal component analysis showed that males were significantly more drought tolerant than females, and AM formation enhanced drought tolerance, particularly among males, which suggested that AM fungi are beneficial for ecological stability and for P. cathayana survival under drought conditions.

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Tài liệu tham khảo

10.1007/s10535-014-0392-y

10.1016/j.envexpbot.2013.03.008

10.1016/j.scienta.2006.02.019

Anjum SA, 2011, Morphological, physiological and biochemical responses of plants to drought stress, Afr J Agric Res, 6, 2026

10.1016/j.envexpbot.2005.12.006

10.1007/s005720100097

10.4141/S04-002

10.1007/s00572-011-0408-9

10.1016/j.jplph.2009.07.014

10.1016/j.envexpbot.2007.10.001

10.1111/j.1438-8677.2011.00531.x

10.1111/j.1399-3054.2010.01393.x

10.1016/S0176-1617(11)80339-1

10.1093/jxb/erm160

10.1007/s11104-013-1635-y

10.1016/j.jplph.2004.03.011

10.1016/S0176-1617(98)80179-X

Gong M, 2012, Effects of two Glomus species on the growth and physiological performance of Sophora davidii seedlings under water stress, New For, 44, 1

10.1111/j.1365-3040.2012.02578.x

10.1007/s11738-006-0013-2

10.1023/A:1024843419670

10.1055/s-2005-872893

10.1016/j.scienta.2005.05.009

10.1111/j.1469-8137.2009.02835.x

10.3906/tar-1305-52

10.1007/s11738-007-0062-1

10.1111/j.1399-3054.2012.01676.x

10.1016/j.ejsobi.2010.01.001

10.1016/j.jphotobiol.2014.01.010

10.1016/S0007-1536(70)80110-3

10.1016/j.envexpbot.2014.02.005

10.1111/j.1365-3040.2009.02030.x

10.1016/j.foreco.2006.11.014

10.1023/A:1020125719386

10.1007/s00572-003-0237-6

10.1007/978-90-481-9449-0_17

Smith SE, 2008, Mycorrhizal Symbiosis

Solomon S, 2007, IPCC Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change

10.1016/j.envexpbot.2013.10.005

10.1007/s11738-012-1109-5

10.1111/j.1365-313X.2005.02593.x

10.1111/j.1469-8137.1950.tb05146.x

10.1111/j.1365-3040.2008.01799.x

10.1016/j.plantsci.2004.06.005

10.1023/A:1007201411474

10.1080/03650340.2013.841889

10.1093/jxb/erq306

10.1016/j.foreco.2012.03.014

10.1111/jac.12001

10.1016/j.apsoil.2014.11.016

10.17221/23/2011-PSE

10.1007/s11099-014-0009-x