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Dual inoculation with rhizosphere-promoting bacterium Bacillus cereus and beneficial fungus Peniophora cinerea improves salt stress tolerance and productivity in willow. Microbiol Res 2023; 268:127280. [PMID: 36563631 DOI: 10.1016/j.micres.2022.127280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/10/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Utilization of rhizosphere microorganisms to improve plant growth and salt tolerance has recently attracted widespread attention. The growth and salt tolerance of willows inoculated with Bacillus cereus JYZ-SD2 and Peniophora cinerea XC were studied under different salt stress conditions. The results showed that the chlorophyll content of willow cuttings inoculated with the XC strain increased significantly by 51.27%. After salt stress of willow cuttings inoculated with B. cereus JYZ-SD2 and P. cinerea XC (solely or in combination), the amount of sodium in the roots from the epidermis to the pericycle decreased and the content of sodium in the pericycle was significantly lower than that of the uninoculated willow, while the proportion of potassium increased. Willow cuttings inoculated with microorganisms showed increased activity of SOD and POD. At the salt concentration of 100 mmol/L, the highest SOD activity was found in B. cereus JYZ-SD2-inoculated willows, with 59.88% increase compared to uninoculated willows; the highest POD activity was found in P. cinerea XC and B. cereus JYZ-SD2 co-inoculated willows, with 51.05% increase compared to uninoculated willows. The Na-K-ATPase and Ca-Mg-ATPase activities of inoculated P. cinerea XC willow cuttings were also 59.38% and 60% higher than that of uninoculated willows, respectively. The qPCR analysis showed that the expression of vp2 gene in the microorganism-inoculated willow leaves was always higher than that in willow alone. The expression of vp2 gene in P. cinerea XC-inoculated willow cuttings was 270.81% higher than that in uninoculated willows. Further observation of the ultrastructure of root cells under salt stress revealed that most of the vesicles in the root tip cells of willow were intact and secreted phagocytic vesicles to absorb sodium ions in the cytoplasm. This study shows that the combined beneficial fungi and rhizosphere-promoting bacteria inoculation technology as a practical biotechnological approach to enhance the growth of willows in salt-affected soils.
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Zhang J, Yuan H, Yang Q, Li M, Wang Y, Li Y, Ma X, Tan F, Wu R. The genetic architecture of growth traits in Salix matsudana under salt stress. HORTICULTURE RESEARCH 2017; 4:17024. [PMID: 28638623 PMCID: PMC5469942 DOI: 10.1038/hortres.2017.24] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/24/2017] [Accepted: 04/24/2017] [Indexed: 05/24/2023]
Abstract
Willow (Salix) is one of the most important ornamental tree species in landscape plants. One species, Salix matsudana, is widely used as a shade tree and border tree because of its soft branches and plump crown. Some varieties of S. matsudana were salt tolerant and could grow normally in coastal regions. However, the molecular mechanisms of salt tolerance for S. matsudana have been less clear. Here, we addressed this issue by performing a mapping experiment containing 195 intraspecific F1 progeny of S. matsudana, derived from salt-sensitive 'yanjiang' and salt-tolerant '9901', grown by cuttings in a 100 mM NaCl solution. Growth performance of these progeny under salt stress was investigated, displaying marked genotypic variability with the coefficients of variance of 28.64-86.11% in shoot and root growth traits. We further mapped specific QTLs contributing to these differences to the Salix genome. Of the 204 QTLs identified, a few were detected to explain a remarkably larger portion of the phenotypic variation than many others. Many detected QTLs were found to reside in the region of candidate genes of known biological function. The discovery of growth QTLs expressed under salt stress provides important information for marker-assisted breeding of salt tolerant Salix varieties and founds the basis for the application of S. matsudana in coastal afforestation.
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Affiliation(s)
- Jian Zhang
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
- Jiangsu Riverine Institute of Agricultural Sciences, Nantong, Jiangsu 226541, China
| | - Huwei Yuan
- State Key Laboratory of Subtropical Silviculture, School of Forestry & Bio-technology, Zhejiang A & F University, Hangzhou, Zhejiang 311300, China
- Center for Cultivation of Subtropical Forest Resources (CCSFR), School of Forestry & Bio-technology, Zhejiang A & F University, Hangzhou, Zhejiang 311300, China
| | - Qingshan Yang
- Shandong Academy of Forestry, Jinan, Shandong 250014, China
| | - Min Li
- Jiangsu Riverine Institute of Agricultural Sciences, Nantong, Jiangsu 226541, China
| | - Ying Wang
- Jiangsu Riverine Institute of Agricultural Sciences, Nantong, Jiangsu 226541, China
| | - Yujuan Li
- Jiangsu Riverine Institute of Agricultural Sciences, Nantong, Jiangsu 226541, China
| | - Xiangjian Ma
- Jiangsu Riverine Institute of Agricultural Sciences, Nantong, Jiangsu 226541, China
| | - Feng Tan
- Jiangsu Riverine Institute of Agricultural Sciences, Nantong, Jiangsu 226541, China
| | - Rongling Wu
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
- Center for Statistical Genetics, Pennsylvania State University, Hershey, PA 17033, USA
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Zhang J, Yuan H, Li M, Li Y, Wang Y, Ma X, Zhang Y, Tan F, Wu R. A High-Density Genetic Map of Tetraploid Salix matsudana Using Specific Length Amplified Fragment Sequencing (SLAF-seq). PLoS One 2016; 11:e0157777. [PMID: 27327501 PMCID: PMC4915623 DOI: 10.1371/journal.pone.0157777] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/03/2016] [Indexed: 01/20/2023] Open
Abstract
As a salt-tolerant arbor tree species, Salix matsudana plays an important role in afforestation and greening in the coastal areas of China. To select superior Salix varieties that adapt to wide saline areas, it is of paramount importance to understand and identify the mechanisms of salt-tolerance at the level of the whole genome. Here, we describe a high-density genetic linkage map of S. matsudana that represents a good coverage of the Salix genome. An intraspecific F1 hybrid population was established by crossing the salt-sensitive “Yanjiang” variety as the female parent with the salt-tolerant “9901” variety as the male parent. This population, along with its parents, was genotyped by specific length amplified fragment sequencing (SLAF-seq), leading to 277,333 high-quality SLAF markers. By marker analysis, we found that both the parents and offspring were tetraploid. The mean sequencing depth was 53.20-fold for “Yanjiang”, 47.41-fold for “9901”, and 11.02-fold for the offspring. Of the SLAF markers detected, 42,321 are polymorphic with sufficient quality for map construction. The final genetic map was constructed using 6,737 SLAF markers, covering 38 linkage groups (LGs). The genetic map spanned 5,497.45 cM in length, with an average distance of 0.82 cM. As a first high-density genetic map of S. matsudana constructed from salt tolerance-varying varieties, this study will provide a foundation for mapping quantitative trait loci that modulate salt tolerance and resistance in Salix and provide important references for molecular breeding of this important forest tree.
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Affiliation(s)
- Jian Zhang
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Huwei Yuan
- National Engineering Laboratory for Forest Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants of Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Min Li
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Yujuan Li
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Ying Wang
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Xiangjian Ma
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Yuan Zhang
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Feng Tan
- Jiangsu Riverine Institute of Agricultural Sciences, Rugao, Jiangsu, China
| | - Rongling Wu
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Center for Statistical Genetics, Pennsylvania State University, Hershey, United States of America
- * E-mail: ;
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