Relationship between plant hormone level excreted by ectomycorrhizal fungi and growth of poplar NL-895

doi:10.1007/s11461-009-0029-z

Front Fore Chin

2009, Vol. 4

Issue (2) : 236-241 https://doi.org/10.1007/s11461-009-0029-z

RESEARCH ARTICLE

Relationship between plant hormone level excreted by ectomycorrhizal fungi and growth of poplar NL-895

Lei MA, Xiaoqin WU(

), Ling ZHENG

College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China

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Abstract

To explore theeffects of plant hormones levels excreted by ectomycorrhizal (ECM) fungi on the growth of poplars, Populus × euramericana cv. NL-895 seedlings were inoculated with nine species of ECM fungi. We investigated the status of ectomycorrhizal formation and the effects of these fungi on poplar growth, and using the HPLC method, we measured the contents of four kinds of plant hormones, indole acetic acid (IAA), zeatin (Z), gibberellin (GA) and abscisic acid (ABA) in both the culture filtrate and the mycelium of these fungi. The results showed that the effects of nine ECM fungi on the growth of poplar NL-895 varied. The inoculated seedlings, whether or not obvious mycorrhizas were developed, grew better than those non-inoculated ones. All nine ectomycorrhizal fungi excreted the four plant hormones, but at different levels. The hormone contents in culture filtrate were higher than that in mycelium, which show a definite relationship with poplar growth. Significantly, correlation analysis suggested the height and stem diameter of the poplar were positively correlated with zeatin contents in the mycelium, and were negatively correlated with the levels of ABA or IAA in the mycelium.

Keywords ectomycorrhizal fungi plant hormone poplar NL-895 HPLC

Corresponding Author(s): WU Xiaoqin,Email:xqwu@njfu.edu.com.cn

Issue Date: 05 June 2009

Cite this article:

Lei MA,Xiaoqin WU,Ling ZHENG. Relationship between plant hormone level excreted by ectomycorrhizal fungi and growth of poplar NL-895[J]. Front Fore Chin, 2009, 4(2): 236-241.

URL:

https://academic.hep.com.cn/ffc/EN/10.1007/s11461-009-0029-z
https://academic.hep.com.cn/ffc/EN/Y2009/V4/I2/236

Fig.1 Effects of nine ectomycorrhizal fungi on growth of poplars

Fig.2 Comparison of plant hormones secreted by nine kinds of ectomycorrhizal fungi
a: indole-acetic acid (IAA); b: gibberellin (GA); c: zeatin (Z); d: abscisic acid (ABA)

Tab.1 Correlations between the four plant hormones and the height and diameter growth of NL-895 poplar

Tab.2 Variance analysis of the height model of NL-895 poplar

Tab.3 Coefficients between four plant hormones and the height model of NL-895 poplar

Tab.4 Variance analysis of the diameter model of NL-895 poplar

Tab.5 Coefficients between the four plant hormones and the diameter model of NL-895 poplar

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[1]	MA Lei, WU Xiaoqin, ZHENG Ling. Mycorrhizal formation of nine ectomycorrhizal fungi on poplar cuttings[J]. Front. For. China, 2008, 3(4): 475-479.

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