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CAREER: Nectar chemistry and ecological and evolutionary tradeoffs in plant adaptation to microbes and pollinators

职业：花蜜化学以及植物适应微生物和传粉媒介的生态和进化权衡

基本信息

批准号：
1846266
负责人：
Rachel Vannette
金额：
$ 89.61万
依托单位：
University of California-Davis
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-08-01 至 2025-07-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846266&HistoricalAwards=false
关键词：
CAREER Nectar chemistry ecological evolutionary

项目摘要

Plants interact with a variety of organisms. The flowers and the nectar plants produce are adapted to attract beneficial organisms like bees or hummingbirds. However, microbes like bacteria and fungi also inhabit flowers and can reduce plant reproduction. Plant traits can reduce microbial growth in nectar, but this may also reduce pollinator visitation. This project will investigate if plants that are pollinated by different organisms (e.g. birds vs bees vs flies) differ in their ability to reduce microbial growth and if nectar chemistry is associated with microbial growth. This project will examine if nectar traits can be used to breed plants to be more resistant to harmful microbes without reducing attraction to pollinators. Resistance to microbes is beneficial in agricultural contexts where floral pathogens can limit food production but crops still rely on pollination. This research will link variation in plant phenotype to microbial abundance and species composition, and microbial effects on plant-animal interactions. This project will use a tractable system: the microorganisms growing in floral nectar, which can influence floral visitors and plant reproduction. The underlying hypothesis tested is that plant traits that facilitate or reduce microbial growth, and the community context (e.g., presence of pollinators) influence ecological and evolutionary outcomes. The research activities will be performed using 1) a community of co-flowering plant species and 2) genotypes within Epilobium canum. Experiments will characterize variation in microbial growth, nectar chemistry, and microbial effects on plant reproduction and floral visitor behavior and the interactions of these factors. Experiments and analysis will reveal how variation in nectar chemistry is associated with microbial growth and species composition in nectar, and subsequent effects on plant-pollinator interactions including plant reproduction. Experiments across Epilobium genotypes will elucidate how microbes affect microevolution of floral traits in a community context. This project will engage students from a large undergraduate class to participate in practitioner-motivated research projects. Students will also participate in outreach to local communities on pollinator-friendly plantings for horticultural and landscaping. The project will support students recruited from diverse and underrepresented backgrounds to participate in independent projects related to project objectives.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

植物与多种生物相互作用。植物产生的花朵和花蜜适应了吸引有益的生物，如蜜蜂或蜂鸟。然而，细菌和真菌等微生物也栖息在花朵上，可以减少植物的繁殖。植物性状可以减少花蜜中的微生物生长，但这也可能减少传粉者的访问。该项目将调查由不同生物（如鸟类、蜜蜂和苍蝇）授粉的植物在减少微生物生长的能力上是否存在差异，以及花蜜化学是否与微生物生长有关。这个项目将研究花蜜性状是否可以用来培育对有害微生物更有抵抗力的植物，同时又不减少对传粉者的吸引力。对微生物的抗性在农业环境中是有益的，因为花卉病原体可以限制粮食生产，但作物仍然依赖授粉。本研究将把植物表型变异与微生物丰度和物种组成以及微生物对植物-动物相互作用的影响联系起来。这个项目将使用一个易于处理的系统：生长在花蜜中的微生物，它可以影响花的访客和植物的繁殖。所测试的基本假设是，促进或减少微生物生长的植物性状以及群落背景（例如，传粉者的存在）影响生态和进化结果。研究活动将利用1)共花植物群落和2)canum内的基因型。实验将描述微生物生长、花蜜化学、微生物对植物繁殖和访花行为的影响以及这些因素的相互作用。实验和分析将揭示花蜜化学的变化如何与花蜜中的微生物生长和物种组成相关，以及随后对植物-传粉者相互作用的影响，包括植物繁殖。跨毛霉基因型的实验将阐明微生物如何在群落背景下影响花性状的微进化。这个项目将吸引来自一个大的本科班级的学生参与实践动机的研究项目。学生们还将参与到当地社区的推广活动中，在园艺和景观美化中种植有利于传粉媒介的植物。该项目将支持来自不同和代表性不足背景的学生参与与项目目标相关的独立项目。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

期刊论文数量（11）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Culturable bacteria are more common than fungi in floral nectar and are more easily dispersed by thrips, a ubiquitous flower visitor

花蜜中可培养的细菌比真菌更常见，并且更容易被蓟马（一种无处不在的花卉访客）传播

DOI：
10.1093/femsec/fiab150
发表时间：
2021
期刊：
FEMS Microbiology Ecology
影响因子：
4.2
作者：
Vannette, Rachel L.;McMunn, Marshall S.;Hall, Griffin W.;Mueller, Tobias G.;Munkres, Ivan;Perry, Douglas
通讯作者：
Perry, Douglas

Microbial Co-Occurrence in Floral Nectar Affects Metabolites and Attractiveness to a Generalist Pollinator

DOI：
10.1007/s10886-020-01169-3
发表时间：
2020-04
期刊：
Journal of Chemical Ecology
影响因子：
2.3
作者：
Caitlin C. Rering;R. Vannette;R. Schaeffer;J. Beck
通讯作者：
Caitlin C. Rering;R. Vannette;R. Schaeffer;J. Beck

Volatile microbial semiochemicals and insect perception at flowers

DOI：
10.1016/j.cois.2020.10.004
发表时间：
2021-04-01
期刊：
CURRENT OPINION IN INSECT SCIENCE
影响因子：
5.3
作者：
Crowley-Gall, Amber;Rering, Caitlin C.;Beck, John J.
通讯作者：
Beck, John J.

Microbial metabolites elicit distinct olfactory and gustatory preferences in bumblebees

微生物代谢物引起大黄蜂独特的嗅觉和味觉偏好

DOI：
10.1098/rsbl.2019.0132
发表时间：
2019
期刊：
Biology Letters
影响因子：
3.3
作者：
Schaeffer, Robert N.;Rering, Caitlin C.;Maalouf, Isabelle;Beck, John J.;Vannette, Rachel L.
通讯作者：
Vannette, Rachel L.

Linked networks reveal dual roles of insect dispersal and species sorting for bacterial communities in flowers

链接网络揭示了昆虫传播和花卉细菌群落物种分类的双重作用