Pollen sterols are associated with phylogeny and environment but not with pollinator guilds.
Pollen sterols are associated with phylogeny and environment but not with pollinator guilds.
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DOI：
10.1111/nph.17227
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发表时间：
2021-05
期刊：
影响因子：
--
通讯作者：
Stevenson PC
中科院分区：
文献类型：
--
作者：
Zu P;Koch H;Schwery O;Pironon S;Phillips C;Ondo I;Farrell IW;Nes WD;Moore E;Wright GA;Farman DI;Stevenson PC
植物甾醇是具有基本结构和调节功能的初级植物代谢产物。它们也是植食性昆虫的必需营养素，包括不能合成甾醇的传粉昆虫。尽管营养植物组织中的组成和多样性得到了很好的描述，但很少有研究检查花粉中的植物甾醇多样性。我们量化了122种植物（105属，51科）中的25种花粉植物甾醇，以确定其组成和植物类群的多样性。我们检索了文献和数据库的植物发育，环境条件和传粉者协会的物种，研究与花粉甾醇的关系。24-亚甲基胆甾醇、谷甾醇和异岩藻甾醇是最常见和最丰富的花粉甾醇。我们发现了12种甾醇、总甾醇含量和甾醇多样性的系统发育聚类，以及反映其潜在生物合成途径（C-24烷基化、环B去饱和）的甾醇分组。起源于热带气候的植物（年平均温度较高，温度季节性较低，最潮湿季度的降水量较高）更有可能记录较高的花粉甾醇含量。然而，花粉甾醇的组成和含量与传粉者的功能团没有明显的关系。我们的研究是第一次表明，花粉甾醇多样性是遗传聚类和花粉甾醇含量可能适应环境条件。
Phytosterols are primary plant metabolites that have fundamental structural and regulatory functions. They are also essential nutrients for phytophagous insects, including pollinators, that cannot synthesize sterols. Despite the well‐described composition and diversity in vegetative plant tissues, few studies have examined phytosterol diversity in pollen. We quantified 25 pollen phytosterols in 122 plant species (105 genera, 51 families) to determine their composition and diversity across plant taxa. We searched literature and databases for plant phylogeny, environmental conditions, and pollinator guilds of the species to examine the relationships with pollen sterols. 24‐methylenecholesterol, sitosterol and isofucosterol were the most common and abundant pollen sterols. We found phylogenetic clustering of twelve individual sterols, total sterol content and sterol diversity, and of sterol groupings that reflect their underlying biosynthesis pathway (C‐24 alkylation, ring B desaturation). Plants originating in tropical‐like climates (higher mean annual temperature, lower temperature seasonality, higher precipitation in wettest quarter) were more likely to record higher pollen sterol content. However, pollen sterol composition and content showed no clear relationship with pollinator guilds. Our study is the first to show that pollen sterol diversity is phylogenetically clustered and that pollen sterol content may adapt to environmental conditions.
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影响因子：
1.9
作者：
GUO, DA;VENKATRAMESH, M;NES, WD
通讯作者：
NES, WD
影响因子：
2.3
作者：
Amar, Samija;Becker, Heiko C.;Moellers, Christian
通讯作者：
Moellers, Christian
DOI：
10.1073/pnas.1423041112
发表时间：
2015-10-13
影响因子：
11.1
作者：
Hinchliff, Cody E.;Smith, Stephen A.;Cranston, Karen A.
通讯作者：
Cranston, Karen A.
影响因子：
2.9
作者：
Dufourc, Erick J.
通讯作者：
Dufourc, Erick J.
影响因子：
2.2
作者：
Behmer, ST;Elias, DO
通讯作者：
Elias, DO