不可避免：底物钠对植物生长和组织钠反应的影响,Ecology and Evolution

当前位置： X-MOL 学术 › Ecol. Evol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

不可避免：底物钠对植物生长和组织钠反应的影响
Ecology and Evolution ( IF 2.3 ) Pub Date : 2021-09-23 , DOI: 10.1002/ece3.8138
Luis Y Santiago-Rosario ₁ , Kyle E Harms ₁ , Bret D Elderd ₁ , Pamela B Hart ₁ , Maheshi Dassanayake ₁

Affiliation

作为许多生物体必需的微量营养素，钠在生态和进化动力学中发挥着重要作用。尽管植物介导从底物到更高营养水平的钠营养通量，但关于植物生长和钠积累响应底物钠变化的比较研究相对较少。因此，我们对植物对底物钠浓度变化的反应进行了系统评价。
我们比较了 107 个品种或种群（20 个植物科的 67 个物种）的生物量和组织钠积累，广泛扩展到农业和模式分类单元之外，此前已经对其进行了一些概括。我们假设每个群体的生长和钠积累的先验响应模型是增加底物 NaCl 的函数，并使用贝叶斯信息准则来选择最佳模型。此外，使用系统发育信号分析，我们测试了跨类群反应的系统发育模式。
底物钠对不同类群生长的影响不同，大多数种群在高浓度下会受到有害影响。无论生长反应如何，大多数类群的组织钠浓度随着底物中钠浓度的增加而增加。我们发现整个类群的生长反应类型和钠积累反应类型之间没有很强的关联。尽管实验常常无法在足够广泛的基质盐度范围内测试植物，但非农作物物种往往比驯化物种具有更高的钠耐受性。此外，一些系统发育保守主义是明显的，因为进化历史有助于预测整个系统发育中整个植物生长反应的分布，但不能预测钠积累反应。
我们的研究表明，盐分较高的土壤中的盐分较高的植物被证明是植物类群中钠的普遍模式。无论生长反应如何，随着底物钠水平的增加，钠积累大多呈增加趋势。

"点击查看英文标题和摘要"

No escape: The influence of substrate sodium on plant growth and tissue sodium responses

As an essential micronutrient for many organisms, sodium plays an important role in ecological and evolutionary dynamics. Although plants mediate trophic fluxes of sodium, from substrates to higher trophic levels, relatively little comparative research has been published about plant growth and sodium accumulation in response to variation in substrate sodium. Accordingly, we carried out a systematic review of plants' responses to variation in substrate sodium concentrations.
We compared biomass and tissue-sodium accumulation among 107 cultivars or populations (67 species in 20 plant families), broadly expanding beyond the agricultural and model taxa for which several generalizations previously had been made. We hypothesized a priori response models for each population's growth and sodium accumulation as a function of increasing substrate NaCl and used Bayesian Information Criterion to choose the best model. Additionally, using a phylogenetic signal analysis, we tested for phylogenetic patterning of responses across taxa.
The influence of substrate sodium on growth differed across taxa, with most populations experiencing detrimental effects at high concentrations. Irrespective of growth responses, tissue sodium concentrations for most taxa increased as sodium concentration in the substrate increased. We found no strong associations between the type of growth response and the type of sodium accumulation response across taxa. Although experiments often fail to test plants across a sufficiently broad range of substrate salinities, non-crop species tended toward higher sodium tolerance than domesticated species. Moreover, some phylogenetic conservatism was apparent, in that evolutionary history helped predict the distribution of total-plant growth responses across the phylogeny, but not sodium accumulation responses.
Our study reveals that saltier plants in saltier soils proves to be a broadly general pattern for sodium across plant taxa. Regardless of growth responses, sodium accumulation mostly followed an increasing trend as substrate sodium levels increased.

更新日期：2021-10-19

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南