Synergistic effect of colonization with arbuscular mycorrhizal fungi improves growth and drought tolerance of Plukenetia volubilis seedlings

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 药用植物栽培技术组

	Synergistic effect of colonization with arbuscular mycorrhizal fungi improves growth and drought tolerance of Plukenetia volubilis seedlings
	Zheng, YL
刊名	ACTA PHYSIOLOGIAE PLANTARUM
	2013
卷号	35 期号:3 页码:687-696
关键词	Arbuscular mycorrhizal symbiosis Drought Growth Oxidative stress Plukenetia volubilis
中文摘要	The objective of this study was to investigate the effects of arbuscular mycorrhizal fungus (AMF) inoculation on plant growth and drought tolerance in seedlings of a promising oilseed crop, Sacha Inchi (Plukenetia volubilis L.), under well-watered or drought conditions. AMF inoculation was applied in four treatments: without AMF inoculation, Glomus versiforme, Paraglomus occultum, or combination of both microorganism inoculations. The results showed that AMF colonization significantly enhanced the growth of Sacha Inchi seedlings regardless of soil water conditions, and the greatest development was reached in plants dually inoculated under well-watered conditions. G. versiforme was more efficient than P. occultum. Plants inoculated with both symbionts had significantly greater specific leaf area, leaf area ratio and root volume when compared with the uninoculated control, G. versiforme, and P. occultum treatments alone, indicating a synergistic effect in the two AMF inoculation. Photosynthetic rate and water-use efficiency were stimulated by AMF, but not stomatal conductance. Inoculation with AM fungus increased antioxidant enzymes activities including guaiacol peroxidase and catalase, thus lowering hydrogen peroxide accumulation and oxidative damage, especially under drought stress conditions. However, proline content showed little change during drought stress and AMF colonization conditions, which suggested that proline accumulation might not serve as the main compound for osmotic adjustment of the studied species. These results indicate that AMF inoculation stimulated growth and enhanced drought tolerance of Sacha Inchi seedlings, through alterations in morphological, physiological and biochemical traits. This microbial symbiosis might be an effective cultivation practice in improving the performance and development for Sacha Inchi plants.
公开日期	2013-03-14
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/3952]
专题	西双版纳热带植物园_药用植物栽培技术组生物入侵生态学组
推荐引用方式 GB/T 7714	Zheng, YL. Synergistic effect of colonization with arbuscular mycorrhizal fungi improves growth and drought tolerance of Plukenetia volubilis seedlings[J]. ACTA PHYSIOLOGIAE PLANTARUM,2013,35(3):687-696.
APA	Zheng, YL.(2013).Synergistic effect of colonization with arbuscular mycorrhizal fungi improves growth and drought tolerance of Plukenetia volubilis seedlings.ACTA PHYSIOLOGIAE PLANTARUM,35(3),687-696.
MLA	Zheng, YL."Synergistic effect of colonization with arbuscular mycorrhizal fungi improves growth and drought tolerance of Plukenetia volubilis seedlings".ACTA PHYSIOLOGIAE PLANTARUM 35.3(2013):687-696.