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The potential for climate-induced disruption of plant-microbe symbioses along altitudinal gradients

气候引起的沿海拔梯度破坏植物-微生物共生关系的可能性

基本信息

批准号：
1354972
负责人：
Jennifer Rudgers
金额：
$ 59.34万
依托单位：
University of New Mexico
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2014
资助国家：
美国
起止时间：
2014-06-01 至 2020-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1354972&HistoricalAwards=false
关键词：
potential climate induced disruption plant

项目摘要

Species are moving up mountainsides as temperatures rise. As ranges move to higher altitudes, important interactions between species may be disrupted, with as yet unknown consequences. The coupled dynamics arising from species interactions can produce complex and unanticipated ecological responses to climate change. Novel species responses may feed back on the rate of climate change itself by altering processes that influence carbon cycling.Fungal symbionts of plants, such as endophytes and mycorrhizal fungi, are now well documented to influence the resilience of plants to climate change. Fungi also play critical roles in carbon cycling, by storing carbon in recalcitrant forms and decomposing organic material. Therefore, the potential for climate change to decouple plant and fungal interactions deserves careful attention. While plant movement under changing climates is easily observed, movement of fungal species is inconspicuous and little studied. This project will gauge the potential for plant-fungal symbioses to become destabilized under future climates and test the consequences of disruptions for individual plant species and carbon cycling.This project has four major components. First, the distributions of fungal symbionts colonizing plant leaves and roots will be described along replicated elevation gradients in the Rocky Mountains of Colorado, using microscopy and DNA sequencing. This work constitutes the largest altitudinal survey of fungal symbionts anywhere in the world. Second, an NSF-funded, 22-year long warming experiment will be leveraged to test, for the first time, whether fungal responses to climate warming match their distributional patterns along natural, altitudinal gradients. Third, reciprocal transplants of plants and fungi will mimic range shifts under a 3°C warmer climate and experimentally test the consequences of symbiosis decoupling. Fourth, functional assays will evaluate how disrupted symbioses affect carbon cycling. Broader Impacts: A majority of the budget is allocated to training the next generation of scientists, including students from underrepresented groups at the University of New Mexico, a majority-minority institution. K-12 outreach includes high school teacher training and curriculum development for under-served schools and symbiosis workshops in a kids nature camp and adult citizen science program supported through the Rocky Mountain Biological Laboratory.

随着气温的上升，物种正在向山坡上迁移。随着山脉向更高的海拔移动，物种之间的重要相互作用可能会中断，其后果尚不清楚。物种间相互作用产生的耦合动态可对气候变化产生复杂和不可预见的生态反应。新物种的反应可能会通过改变影响碳循环的过程来反馈气候变化本身的速度。植物的真菌共生体，如内生菌和菌根真菌，现在有充分的记录来影响植物对气候变化的适应能力。真菌在碳循环中也起着关键作用，通过将碳以共生形式储存并分解有机物质。因此，气候变化使植物和真菌相互作用脱钩的潜力值得认真关注。虽然植物在气候变化下的运动很容易观察到，但真菌物种的运动并不明显，研究很少。该项目将评估植物-真菌共生体在未来气候下变得不稳定的可能性，并测试单个植物物种和碳循环中断的后果。该项目有四个主要组成部分。首先，真菌共生体殖民植物叶片和根的分布将描述沿着复制海拔梯度在科罗拉多的落基山脉，使用显微镜和DNA测序。这项工作构成了世界上最大的真菌共生体海拔调查。第二，NSF资助的长达22年的变暖实验将首次用于测试真菌对气候变暖的反应是否与其沿着自然海拔梯度的分布模式相匹配。第三，植物和真菌的相互移植将模拟3°C温暖气候下的范围变化，并通过实验测试共生脱钩的后果。第四，功能分析将评估破坏的共生体如何影响碳循环。更广泛的影响：大部分预算用于培训下一代科学家，包括新墨西哥州大学（一所少数族裔占多数的大学）代表性不足群体的学生。K-12外展包括高中教师培训和课程开发，为服务不足的学校和共生研讨会在一个孩子的自然营和成人公民科学计划通过落基山生物实验室支持。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Biotic and abiotic predictors of fungal colonization in grasses of the Colorado Rockies

科罗拉多落基山脉草丛中真菌定殖的生物和非生物预测因子

DOI：
10.1111/ddi.12310
发表时间：
2015
期刊：
Diversity and Distributions
影响因子：
4.6
作者：
Ranelli, Luciana B.;Hendricks, Will Q.;Lynn, Joshua S.;Kivlin, Stephanie N.;Rudgers, Jennifer A.;Diez, Jeffrey
通讯作者：
Diez, Jeffrey

Responses of high-altitude graminoids and soil fungi to 20 years of experimental warming

DOI：
10.1890/13-1454.1
发表时间：
2014-07-01
期刊：
ECOLOGY
影响因子：
4.8
作者：
Rudgers, Jennifer A.;Kivlin, Stephanie N.;Harte, John
通讯作者：
Harte, John

Vertically transmitted symbionts as mechanisms of transgenerational effects

DOI：
10.3732/ajb.1700036
发表时间：
2017-05-01
期刊：
AMERICAN JOURNAL OF BOTANY
影响因子：
3
作者：
Gundel, Pedro E.;Rudgers, Jennifer A.;Whitney, Kenneth D.
通讯作者：
Whitney, Kenneth D.

Does a foliar endophyte improve plant fitness under flooding?

DOI：
10.1007/s11258-017-0723-0
发表时间：
2017-06-01
期刊：
PLANT ECOLOGY
影响因子：
1.7
作者：
Adams, Amy E.;Kazenel, Melanie R.;Rudgers, Jennifer A.
通讯作者：
Rudgers, Jennifer A.

Plant Identity Influences Foliar Fungal Symbionts More Than Elevation in the Colorado Rocky Mountains

DOI：
10.1007/s00248-019-01336-4
发表时间：
2019-02
期刊：
Microbial Ecology
影响因子：
3.6
作者：
S. Kivlin;S. Kivlin;S. Kivlin;Melanie R. Kazenel;Melanie R. Kazenel;J. Lynn;J. Lynn;D. L. Taylor;Jennifer A. Rudgers;Jennifer A. Rudgers
通讯作者：
S. Kivlin;S. Kivlin;S. Kivlin;Melanie R. Kazenel;Melanie R. Kazenel;J. Lynn;J. Lynn;D. L. Taylor;Jennifer A. Rudgers;Jennifer A. Rudgers