Critical Role of the gcd Gene in Enhancing Soil Phosphorus Availability Under Vegetation Restoration in the Mu Us Sandy Land

IF 3.7 2区农林科学 Q2 ENVIRONMENTAL SCIENCES

Land Degradation & Development Pub Date : 2025-09-21 DOI:10.1002/ldr.70216

Ermao Ding, Fanglin Shen, Yaxing Liu, Xian Ren, Tengyue Du, Shichen Wang, Lirong Zhao, Dangping Yan, Jie Yang, Lu Gao, Yixuan Liu, Weibo Shen

{"title":"Critical Role of the gcd Gene in Enhancing Soil Phosphorus Availability Under Vegetation Restoration in the Mu Us Sandy Land","authors":"Ermao Ding, Fanglin Shen, Yaxing Liu, Xian Ren, Tengyue Du, Shichen Wang, Lirong Zhao, Dangping Yan, Jie Yang, Lu Gao, Yixuan Liu, Weibo Shen","doi":"10.1002/ldr.70216","DOIUrl":null,"url":null,"abstract":"Phosphorus (P) is a critical limiting nutrient for plant growth and microbial metabolism in many terrestrial ecosystems, but the global depletion of P reserves poses challenges for soil nutrient cycling. Here, changes and influencing mechanisms of soil phosphorus components and related microbial communities in different vegetation restoration types of Mu Us Sandy Land—bare sandy land (CK), grassland (GL), shrubland (SL), grass and shrubland (GSL), and forest land (FL) were explored. The GSL and FL restoration types exhibited higher SOC levels and enzyme activities, indicating greater microbial activity and nutrient utilization efficiency. The distribution of P‐transforming microbial genes varied among vegetation restoration types, with the phoD gene most abundant in GSL and the gcd gene most abundant in SL. Correlation analyses indicated that the gcd gene, linked to Actinobacteria and Proteobacteria, was strongly associated with the transformation of moderately stable phosphates into plant‐available forms. Mantel test results revealed that phoD gene abundance was significantly correlated with SOC content (p < 0.05), whereas gcd gene abundance was strongly correlated with NaOH‐Pi (p < 0.01) and also significantly correlated with AP content (p < 0.05). Such correlations underscore the critical roles of specific genes in enhancing soil P availability and nutrient cycling. This study highlights that strategic vegetation restoration, particularly GSL and FL, can effectively improve soil nutrient status and microbial functionality. These findings provide valuable insights for ecological restoration and sustainable land management in desertified regions.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"59 1","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Land Degradation & Development","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1002/ldr.70216","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Phosphorus (P) is a critical limiting nutrient for plant growth and microbial metabolism in many terrestrial ecosystems, but the global depletion of P reserves poses challenges for soil nutrient cycling. Here, changes and influencing mechanisms of soil phosphorus components and related microbial communities in different vegetation restoration types of Mu Us Sandy Land—bare sandy land (CK), grassland (GL), shrubland (SL), grass and shrubland (GSL), and forest land (FL) were explored. The GSL and FL restoration types exhibited higher SOC levels and enzyme activities, indicating greater microbial activity and nutrient utilization efficiency. The distribution of P‐transforming microbial genes varied among vegetation restoration types, with the phoD gene most abundant in GSL and the gcd gene most abundant in SL. Correlation analyses indicated that the gcd gene, linked to Actinobacteria and Proteobacteria, was strongly associated with the transformation of moderately stable phosphates into plant‐available forms. Mantel test results revealed that phoD gene abundance was significantly correlated with SOC content (p < 0.05), whereas gcd gene abundance was strongly correlated with NaOH‐Pi (p < 0.01) and also significantly correlated with AP content (p < 0.05). Such correlations underscore the critical roles of specific genes in enhancing soil P availability and nutrient cycling. This study highlights that strategic vegetation restoration, particularly GSL and FL, can effectively improve soil nutrient status and microbial functionality. These findings provide valuable insights for ecological restoration and sustainable land management in desertified regions.

查看原文本刊更多论文

毛乌素沙地植被恢复条件下gcd基因在提高土壤磷有效性中的关键作用

在许多陆地生态系统中，磷是植物生长和微生物代谢的关键限制性养分，但全球磷储量的枯竭对土壤养分循环提出了挑战。探讨毛乌素沙地-光秃秃沙地（CK）、草地（GL）、灌丛地（SL）、草灌丛地（GSL）和林地（FL）不同植被恢复类型土壤磷组分及相关微生物群落的变化及其影响机制。GSL和FL恢复类型土壤有机碳水平和酶活性较高，表明微生物活性和养分利用效率较高。P转化微生物基因在不同植被恢复类型中的分布不同，其中phoD基因在GSL中含量最多，gcd基因在SL中含量最多。相关分析表明，与放线菌门和变形菌门相关的gcd基因与中等稳定的磷酸盐转化为植物可利用的形式密切相关。Mantel检测结果显示，phoD基因丰度与有机碳含量呈极显著相关（p < 0.05），而gcd基因丰度与NaOH - Pi呈极显著相关（p < 0.01），与AP含量也呈极显著相关（p < 0.05）。这种相关性强调了特定基因在提高土壤磷有效性和养分循环中的关键作用。研究结果表明，策略性植被恢复，尤其是GSL和FL能够有效改善土壤养分状况和微生物功能。这些发现为沙漠化地区的生态恢复和土地可持续管理提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Land Degradation & Development 农林科学-环境科学

CiteScore

7.70

自引率

8.50%

发文量

379

审稿时长

5.5 months

期刊介绍： Land Degradation & Development is an international journal which seeks to promote rational study of the recognition, monitoring, control and rehabilitation of degradation in terrestrial environments. The journal focuses on: - what land degradation is; - what causes land degradation; - the impacts of land degradation - the scale of land degradation; - the history, current status or future trends of land degradation; - avoidance, mitigation and control of land degradation; - remedial actions to rehabilitate or restore degraded land; - sustainable land management.