Scholarlink

<p><UnorderedList Mark="Bullet"> <ItemContent> <p>Correlated acemannan and Na accumulation in leaf gel in response to soil salinity.</p> </ItemContent> <ItemContent> <p>Altered root-associated prokaryotic and fungal communities.</p> </ItemContent> <ItemContent> <p>Root prokaryotes shifted to monoderm bacteria associated with stress tolerance.</p> </ItemContent> <ItemContent> <p><i>Aloe barbadensis</i> displays coordinated plant–microbe responses under soil salinity.</p> </ItemContent> </UnorderedList></p><p>Salinity adversely impacts soil ecosystems, by inducing osmotic stress, ionic imbalances, water deficit, and oxidative damage in plants. It also alters the composition of plant-associated microbial communities in the rhizosphere and roots, while disrupting microbial processes critical to nutrient cycles. <i>Aloe vera</i> (<i>Aloe barbadensis</i> Miller), a xerophytic succulent plant, produces acemannan, a bioactive polysaccharide in its leaf gel with pharmaceutical applications. Acemannan contributes to drought tolerance by facilitating water storage within the leaf gel tissue. This study examined the effects of soil salinity on rhizosphere properties, plant nutrient acquisition, acemannan accumulation, and plant-associated microbial communities in <i>A. vera</i> plants grown in the field in Laconia, Greece. Both acemannan and sodium (Na) accumulated in the leaf gel in response to soil salinity, showing a strong positive correlation. Significant differences in the composition and structure of the rhizosphere and root microbial communities were also observed under salinity, with the prokaryotic microbial community in the plant roots showing a pronounced shift towards functionally relevant membership and abundance of monoderms. Moreover, we observed significant co-variation of changes in the acemannan and Na concentrations in the leaf gel with changes in the prokaryotic rhizosphere soil community and the fungal community in the roots. Our findings demonstrate enhanced accemanan production and indicate links between osmolyte accumulation and microbial community adaptation in <i>A. vera</i> under soil salinity.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Soil salinity alters acemannan content and sodium uptake in Aloe barbadensis Miller plants. A role for root-associated microbial communities?

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月25日

查看全文
  • Christina N. Nikolaou,
  • Myrto Tsiknia,
  • Dionisios Gasparatos,
  • Constantinos Ehaliotis

摘要

Correlated acemannan and Na accumulation in leaf gel in response to soil salinity.

Altered root-associated prokaryotic and fungal communities.

Root prokaryotes shifted to monoderm bacteria associated with stress tolerance.

Aloe barbadensis displays coordinated plant–microbe responses under soil salinity.

Salinity adversely impacts soil ecosystems, by inducing osmotic stress, ionic imbalances, water deficit, and oxidative damage in plants. It also alters the composition of plant-associated microbial communities in the rhizosphere and roots, while disrupting microbial processes critical to nutrient cycles. Aloe vera (Aloe barbadensis Miller), a xerophytic succulent plant, produces acemannan, a bioactive polysaccharide in its leaf gel with pharmaceutical applications. Acemannan contributes to drought tolerance by facilitating water storage within the leaf gel tissue. This study examined the effects of soil salinity on rhizosphere properties, plant nutrient acquisition, acemannan accumulation, and plant-associated microbial communities in A. vera plants grown in the field in Laconia, Greece. Both acemannan and sodium (Na) accumulated in the leaf gel in response to soil salinity, showing a strong positive correlation. Significant differences in the composition and structure of the rhizosphere and root microbial communities were also observed under salinity, with the prokaryotic microbial community in the plant roots showing a pronounced shift towards functionally relevant membership and abundance of monoderms. Moreover, we observed significant co-variation of changes in the acemannan and Na concentrations in the leaf gel with changes in the prokaryotic rhizosphere soil community and the fungal community in the roots. Our findings demonstrate enhanced accemanan production and indicate links between osmolyte accumulation and microbial community adaptation in A. vera under soil salinity.