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Occurrence and Prevention of Delayed Autonomous Selfing in Salvia umbratica (Lamiaceae)
Xiao,Han-Wen; Huang,Yan-Bo; Chang,Yu-Hang; Chen,Yun; Abbott,Richard J.; Wei,Yu-Kun; Ma,Yong-Peng
2021
Source PublicationFRONTIERS IN PLANT SCIENCE
ISSN1664-462X
Volume12Pages:635310
AbstractDelayed autonomous selfing (DAS) provides reproductive assurance under conditions of pollinator and/or pollen-limitation. Few plant species have been investigated to determine if DAS is terminated when a flower is sufficiently pollinated by a pollen vector, thereby saving plant resources for other purposes. We examined this possibility in bumblebee-pollinated Salvia umbratica. We first showed that DAS resulting in high fruit set (100%) and seed set (>80%) per flower occurred in the absence of insect pollinators by means of style recurvature and was completed in 94% of flowers 72 h after they opened. In contrast, in flowers pollinated immediately after opening, DAS was prevented by corollas dropping away before styles recurve toward the upper thecae. We next showed that hand-pollination of flowers immediately after they opened resulted in high fruit set (100%) and seed set (>80%) when 5-10 pollen grains or more were deposited on their stigmas, whereas fruit set and seed set were reduced to 45.00 and 22.50%, respectively, when pollen loads were reduced to 1-3 pollen grains. Finally, we showed that on average single pollinator visits deposited 26 pollen grains on stigmas of flowers that had just opened, which is more than enough to ensure high fruit and seed set. Our results indicate that flower longevity is highly correlated with the pollinator environment and female fitness of S. umbratica, with extended flower longevity allowing DAS to occur being advantageous when pollinators are absent, while reduced floral longevity and prevention of DAS being favored when flowers are pollinated by pollinators. Thus, flower longevity in S. umbratica varies so as to optimize reproductive output and resource efforts, and is dependent on the availability and effectiveness of pollinators to pollinate flowers.
Keyworddelayed self-pollination pollen-limitation recurving styles seed set Salvia Lamiaceae floral longevity resource use STAMINAL LEVER MECHANISM KOSTELETZKYA-VIRGINICA INBREEDING DEPRESSION POLLINATION BIOLOGY POLLEN LIMITATION SENECIO-VULGARIS L. LAMIACEAE FERTILIZATION DICHOGAMY CURVATURE
DOI10.3389/fpls.2021.635310
WOS IDWOS:000683062000001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/73222
Collection中国科学院昆明植物研究所
Affiliation1.[Xiao, Han-Wen
2.Huang, Yan-Bo
3.Chen, Yun
4.Shanghai Chenshan Bot Garden, Shanghai, Peoples R China
5.Eastern China Conservat Ctr Wild Endangered Plant, Shanghai, Peoples R China
6.[Chang, Yu-Hang
7.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Integrat Conservat Plant Species E, Kunming, Yunnan, Peoples R China
8.[Abbott, Richard J.] Univ St Andrews, Sch Biol, St Andrews, Fife, Scotland
Recommended Citation
GB/T 7714
Xiao,Han-Wen,Huang,Yan-Bo,Chang,Yu-Hang,et al. Occurrence and Prevention of Delayed Autonomous Selfing in Salvia umbratica (Lamiaceae)[J]. FRONTIERS IN PLANT SCIENCE,2021,12:635310.
APA Xiao,Han-Wen.,Huang,Yan-Bo.,Chang,Yu-Hang.,Chen,Yun.,Abbott,Richard J..,...&Ma,Yong-Peng.(2021).Occurrence and Prevention of Delayed Autonomous Selfing in Salvia umbratica (Lamiaceae).FRONTIERS IN PLANT SCIENCE,12,635310.
MLA Xiao,Han-Wen,et al."Occurrence and Prevention of Delayed Autonomous Selfing in Salvia umbratica (Lamiaceae)".FRONTIERS IN PLANT SCIENCE 12(2021):635310.
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