IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Changes in growth and soil microbial communities in reciprocal grafting clones between Populus deltoides males and females exposed to water deficit conditions
Liu Weilong1; Wang Yanping2; Gong Xu1; Li Shuxin1; Smoak Joseph M.3; Duan Baoli1
Corresponding AuthorDuan, Baoli(duanbl@imde.ac.cn)
2019
Source PublicationANNALS OF FOREST SCIENCE
ISSN1286-4560
EISSN1297-966X
Volume76Issue:4Pages:118
SubtypeArticle
Contribution Rank1
AbstractKey message Our findings highlight that male-rooted clones (M/M and F/M) of Populus deltoides are more water-deficit tolerant than female-rooted clones (F/F and M/F), as shown by a smaller decrease in total biomass and net photosynthetic rate in the male-rooted clones. Context It has been reported that graft clones (female scion and male rootstock) in poplars may be an option to mitigate the effects of water deficit on plants. However, the extent to which grafting mitigates the effect of soil water deficit on soil microorganisms remains poorly understood. Aims The research was designed to investigate the effects of soil water deficit on plant growth, soil microbial communities, and soil enzymatic activities of the reciprocal graft clones of P. deltoides. Methods Four different graft clones (female shoot scion and female rootstock, F/F; male shoot scion and female rootstock, M/F; male shoot scion and male rootstock scion, M/M; and female shoot scion andmale rootstock, F/M) in P. deltoides were used. Two watering regimes, irrigation and soil water deficit (i.e., non-irrigation conditions, natural levels of precipitation) were included in the experiments. The microbial community structure was quantified using phospholipid fatty acid. Results Under water deficit, the decreases in total biomass, net photosynthetic rates, and leaf nitrogen content were more evident in M/M and F/M than in F/F and M/F. Bacterial phospholipid fatty acids (PLFAs) and actinomycetal PLFAs remained unaffected in the four graft clones. In contrast, during soil water deficit, fungal PLFAs were higher in M/M and F/M soil coincided with higher extracellular activities of beta-1,4-N-acetyl-glucosaminidase and leucine aminopeptidase. Conclusion Male-rooted clones (M/M and F/M) are more tolerant to water deficit than female-rooted clones (F/F and M/F). It is possible that the better performance of M/M and F/M, when exposed to water deficit, is associated mainly with higher fine root activity, greater specific root length and root/shoot ratio as well as increased fungal PLFAs.
KeywordGrafting Inorganic nitrogen pool PLFAs Nitrogen cycling
DOI10.1007/s13595-019-0897-9
Indexed BySCI
WOS KeywordNITROGEN TRANSFORMATIONS ; FUNCTIONAL DIVERSITY ; RHIZOSPHERE SOILS ; ROOT EXUDATION ; ELEVATED CO2 ; DROUGHT ; RESPONSES ; CARBON ; FOREST ; CATHAYANA
Language英语
Funding ProjectSichuan Science and Technology Support Program[.2017JY0234] ; Sichuan Science and Technology Support Program[SDS-135-1707]
WOS Research AreaForestry
WOS SubjectForestry
WOS IDWOS:000510839200002
Funding OrganizationSichuan Science and Technology Support Program
PublisherSPRINGER FRANCE
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33886
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorDuan Baoli
Affiliation1.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2.College of Forestry, Taishan Forest Ecosystem Research Station, Shandong Agricultural University, Tai’an 271018, China;
3.Environmental Science, University of South Florida, St. Petersburg, Florida 33701, USA
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Liu Weilong,Wang Yanping,Gong Xu,et al. Changes in growth and soil microbial communities in reciprocal grafting clones between Populus deltoides males and females exposed to water deficit conditions[J]. ANNALS OF FOREST SCIENCE,2019,76(4):118.
APA Liu Weilong,Wang Yanping,Gong Xu,Li Shuxin,Smoak Joseph M.,&Duan Baoli.(2019).Changes in growth and soil microbial communities in reciprocal grafting clones between Populus deltoides males and females exposed to water deficit conditions.ANNALS OF FOREST SCIENCE,76(4),118.
MLA Liu Weilong,et al."Changes in growth and soil microbial communities in reciprocal grafting clones between Populus deltoides males and females exposed to water deficit conditions".ANNALS OF FOREST SCIENCE 76.4(2019):118.
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