کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5742592 1617764 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The responses and adaptations of microbial communities to salinity in farmland soils: A molecular ecological network analysis
ترجمه فارسی عنوان
پاسخ ها و سازگاری جوامع میکروبی به شوری در خاک های کشاورزی: ​​تجزیه و تحلیل شبکه های زیست محیطی مولکولی
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


- Salinity altered the compositions and structure of microbial community.
- Salinity enhanced the interactions between microorganisms.
- Salinity selected for Flavobacterium but against Gp4.
- Microbes may change their interactions to survive under high salt conditions.

Soil salinity is an increasing problem deteriorating soil fertility in degraded farmland soils. However, the responses and adaptations of microbial communities and interactions to salinity in farmland are not yet fully understood. In this study, we used 16S rRNA Miseq-sequencing technique to investigate the phylogenetic compositions, diversity and structure of soil microbial communities under different salinity conditions. The results indicated that prokaryotic diversity decreased with salinity. The change in prokaryotic community was primarily driven by salinity levels. The relative abundances of Proteobacteria, Bacteroidetes and Firmicutes were higher, and those of Acidobacteria and Thaumarchaeota were lower under high salinity than in medium and low salinity soils. Further, microbial network interactions changed along the salinity gradient revealed by a phylogenetic molecular ecological networks (pMENs) analysis. Salinity enhanced the interactions between microorganisms, evidenced by more links, higher average degree and average clustering coefficients within the pMENs in high salinity soils. Furthermore, we constructed the sub-networks of Flavobacterium and Acidobacteria_Gp4 to explore the changes of interactions among different microbial groups under salinity. We found that salinity shifted the interactions among different microbial taxa, and such changes vary among different microbial populations. This study provides solid evidences that microbial communities adapt to salinity through the adjustments of microbial compositions and interactions.

185

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 120, November 2017, Pages 239-246
نویسندگان
, , , , , , ,