Arid
DOI10.1002/ajb2.1128
Rapid population sex-ratio changes in the moss Ceratodon purpureus
Eppley, Sarah M.; Rosenstiel, Todd N.; Chmielewski, Matthew W.; Woll, S. Cody; Shaw, Zoe M.; Shortlidge, Erin E.
通讯作者Eppley, Sarah M.
来源期刊AMERICAN JOURNAL OF BOTANY
ISSN0002-9122
EISSN1537-2197
出版年2018
卷号105期号:7页码:1232-1238
英文摘要

PREMISE OF THE STUDY: Sex-ratio variation occurs widely in dioecious plants, but the mechanisms of population sex-ratio bias are poorly understood. In bryophytes, sex ratios are often female biased, and little information is available about how and when bias forms.


METHODS: To test whether population sex-ratio variation can emerge during the gametophytic phase and is not purely a product of spore sex ratios, we created artificial populations of the moss Ceratodon purpureus, with male- and female-biased sex ratios, and placed half under a stress treatment. We hypothesized that male-majority populations would become female-biased and that stress would increase this transition. After 18 mo, when sporophytes were initially forming, we used sex-specific molecular markers to determine population sex ratios.


KEY RESULTS: Female-majority populations did not differ significantly from their original bias, whereas male-majority populations became significantly more female biased. The plants had only just produced their first spores, so these sex-ratio changes occurred during the gametophytic generation, as a result of sex-specific growth or survival. Sporophytes occurred only in populations with female-biased final sex ratios, which suggests that females in male-majority populations may have invested energy in ramets rather than in sporophyte production. The stress treatment was mild and had no effect on sex ratio.


CONCLUSIONS: Our results suggest that female bias can be generated during the gametophytic generation, before plants reach sexual maturity. These results, combined with those of previous work, suggest that both the gametophytic and the sporophytic stages drive population sex ratios in C. purpureus, thus indicating that multiple mechanisms operate to create biased population sex ratios.


英文关键词bryophyte Ditrichaceae gametophyte moss plant sex ratio sex-specific marker sexual reproduction sporophyte stress
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000441289100013
WOS关键词LIVERWORT SPHAEROCARPOS-TEXANUS ; DESERT MOSS ; SYNTRICHIA-CANINERVIS ; PSEUDOCALLIERGON-TRIFARIUM ; HYLOCOMIUM-SPLENDENS ; SPATIAL SEGREGATION ; REPRODUCTIVE EFFORT ; MARCHANTIA-INFLEXA ; MOLECULAR APPROACH ; DIOECIOUS PLANTS
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207485
作者单位Portland State Univ, Dept Biol, POB 751, Portland, OR 97207 USA
推荐引用方式
GB/T 7714
Eppley, Sarah M.,Rosenstiel, Todd N.,Chmielewski, Matthew W.,et al. Rapid population sex-ratio changes in the moss Ceratodon purpureus[J],2018,105(7):1232-1238.
APA Eppley, Sarah M.,Rosenstiel, Todd N.,Chmielewski, Matthew W.,Woll, S. Cody,Shaw, Zoe M.,&Shortlidge, Erin E..(2018).Rapid population sex-ratio changes in the moss Ceratodon purpureus.AMERICAN JOURNAL OF BOTANY,105(7),1232-1238.
MLA Eppley, Sarah M.,et al."Rapid population sex-ratio changes in the moss Ceratodon purpureus".AMERICAN JOURNAL OF BOTANY 105.7(2018):1232-1238.
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