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Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting.
Sci Total Environ. 2020 Sep 10; 734:139388.ST

Abstract

Saline water has to be used as an alternative resource in modern agriculture due to the increasing lack of fresh water. Approaches that promote the growth of crops under saline conditions have, therefore, become crucial. Grafting has been reported to be effective for this; however, the associated bacterial community remains unclear. To obtain a deeper understanding of the underlying microbial mechanisms, both grafted and non-grafted tomatoes were irrigated with three types of water having different electrical conductivity values. The experiment lasted 2.5 months, after which, the soil chemical properties and tomato heights were assessed. The rhizospheric and endophytic bacterial communities of samples from the different treatments were assessed by Illumina sequencing. The results showed that saline water significantly affected leaf-associated endophytic bacterial communities, whereas rhizosphere and root- and stem-associated bacterial communities were not affected. Increasing salinity increased the abundance of Gammaproteobacteria, but decreased the abundance of Actinobacteria, Alphaproteobacteria, Bacilli, and Acidobacteria at the class level of the leaf-associated bacterial community. Moreover, under higher salinity levels, grafting increased the diversity of the leaf-endophytic bacterial community. Overall, this study provides a comprehensive understanding of the rhizosphere and endophytic bacterial communities of tomato under saline conditions. The results highlight the importance of leaf-endophytic bacteria for salt response in plants. This is an important complementary finding to previous studies on the effect of salinity, which mainly focused on plant rhizosphere and root bacterial communities.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Bai Y
Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China.
Ren P
Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Key Laboratory of Plant Nematode of Shaanxi Province, Xi'an 710043, China. Electronic address: mysrenping@163.com.
Feng P
Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China.
Yan H
Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China.
Li W
Bio-Agriculture Institute of Shaanxi, Xi'an 710043, China; Enzyme Engineering Research Center of Shaanxi, Xi'an 710600, China.

MeSH

Solanum lycopersicumMicrobiotaPlant RootsRhizosphereSalinitySoil Microbiology

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32470659

Citation

Bai, Yani, et al. "Shift in Rhizospheric and Endophytic Bacterial Communities of Tomato Caused By Salinity and Grafting." The Science of the Total Environment, vol. 734, 2020, p. 139388.
Bai Y, Ren P, Feng P, et al. Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting. Sci Total Environ. 2020;734:139388.
Bai, Y., Ren, P., Feng, P., Yan, H., & Li, W. (2020). Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting. The Science of the Total Environment, 734, 139388. https://doi.org/10.1016/j.scitotenv.2020.139388
Bai Y, et al. Shift in Rhizospheric and Endophytic Bacterial Communities of Tomato Caused By Salinity and Grafting. Sci Total Environ. 2020 Sep 10;734:139388. PubMed PMID: 32470659.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting. AU - Bai,Yani, AU - Ren,Ping, AU - Feng,Puyang, AU - Yan,Hong, AU - Li,Wenxiao, Y1 - 2020/05/12/ PY - 2020/03/11/received PY - 2020/04/24/revised PY - 2020/05/10/accepted PY - 2020/5/30/pubmed PY - 2020/6/19/medline PY - 2020/5/30/entrez KW - Electrical conductivity value KW - Grafting KW - Leaf associated endophytic bacterial community KW - Salinity SP - 139388 EP - 139388 JF - The Science of the total environment JO - Sci Total Environ VL - 734 N2 - Saline water has to be used as an alternative resource in modern agriculture due to the increasing lack of fresh water. Approaches that promote the growth of crops under saline conditions have, therefore, become crucial. Grafting has been reported to be effective for this; however, the associated bacterial community remains unclear. To obtain a deeper understanding of the underlying microbial mechanisms, both grafted and non-grafted tomatoes were irrigated with three types of water having different electrical conductivity values. The experiment lasted 2.5 months, after which, the soil chemical properties and tomato heights were assessed. The rhizospheric and endophytic bacterial communities of samples from the different treatments were assessed by Illumina sequencing. The results showed that saline water significantly affected leaf-associated endophytic bacterial communities, whereas rhizosphere and root- and stem-associated bacterial communities were not affected. Increasing salinity increased the abundance of Gammaproteobacteria, but decreased the abundance of Actinobacteria, Alphaproteobacteria, Bacilli, and Acidobacteria at the class level of the leaf-associated bacterial community. Moreover, under higher salinity levels, grafting increased the diversity of the leaf-endophytic bacterial community. Overall, this study provides a comprehensive understanding of the rhizosphere and endophytic bacterial communities of tomato under saline conditions. The results highlight the importance of leaf-endophytic bacteria for salt response in plants. This is an important complementary finding to previous studies on the effect of salinity, which mainly focused on plant rhizosphere and root bacterial communities. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/32470659/Shift_in_rhizospheric_and_endophytic_bacterial_communities_of_tomato_caused_by_salinity_and_grafting_ DB - PRIME DP - Unbound Medicine ER -