NDLI: Effect of Rhizophagus irregularis on osmotic adjustment, antioxidation and aquaporin PIP genes expression of Populus × canadensis ‘Neva’ under drought stress

Content Provider	Springer Nature Link
Author	Liu, Ting Li, Zhen Hui, Chen Tang, Ming Zhang, Haoqiang
Copyright Year	2016
Abstract	Drought is an abiotic stress that severely reduces plant growth. Responding to drought, plants would induce a series of physiological and biochemical changes. Colonization by arbuscular mycorrhizal (AM) fungi was reported beneficial in improving plants’ drought tolerance. However, the effect of AM fungi in improving drought tolerance of widely planted Populus spp. was rarely reported. The effect of AM fungus (Rhizophagus irregularis) on malondialdehyde (MDA) content, proline and soluble proteins content, antioxidative enzymes activates, relative water content (RWC) and water use efficiency (WUE), and the aquaporin PIP genes expression of Populus × canadensis ‘Neva’ leaves under well-watered and drought-stressed condition was evaluated. R. irregularis could colonize more than 80 % of poplar roots, reduce MDA and proline content, lower antioxidative enzymes activates, and down-regulate the expression of PIP2;1, PIP2;2. Meanwhile, R. irregularis could increase soluble protein content, increase RWC and WUE, and up-regulate the expression of PIP1;1, PIP1;3, PIP1;4, PIP1;5, PIP2;1, PIP2;2, and PIP2;3. In conclusion, R. irregularis could improve drought tolerance of P. canadensis by increasing RWC via regulation of aquaporin genes expression, and consequently increased WUE, lowered accumulation of osmotic adjustment molecule, reduced ROS accumulation and oxidative damage. Further studies focusing on the influence of AM fungi on specific aquaporin PIP gene location, function and expression in plant responding to drought stress are needed.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	38
Issue Number	8
e-ISSN	18611664
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-07-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rhizophagus irregularis Osmotic adjustment Antioxidation Aquaporins Drought Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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