干旱区生态环境知识资源中心(Arid): A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae)

Arid

DOI	10.1002/ajb2.1611
	A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae)
	Grusz, Amanda L.; Windham, Michael D.; Picard, Kathryn T.; Pryer, Kathleen M.; Schuettpelz, Eric; Haufler, Christopher H.
通讯作者	Grusz, AL (corresponding author), Univ Minnesota, Dept Biol, Duluth, MN 55812 USA.
来源期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
EISSN	1537-2197
出版年	2021
卷号	108 期号:2 页码:263-283
英文摘要	Premise Xeric environments impose major constraints on the fern life cycle, yet many lineages overcome these limitations by evolving apomixis. Here, we synthesize studies of apomixis in ferns and present an evidence-based model for the evolution and establishment of this reproductive strategy, focusing on genetic and environmental factors associated with its two defining traits: the production of unreduced spores (n = 2n) and the initiation of sporophytes from gametophyte tissue (i.e., diplospory and apogamy, respectively). Methods We evaluated existing literature in light of the hypothesis that abiotic characteristics of desert environments (e.g., extreme diurnal temperature fluctuations, high light intensity, and water limitation) drive the evolution of obligate apomixis. Pellaeid ferns (Cheilanthoideae: Pteridaceae) were examined in detail, as an illustrative example. We reconstructed a plastid (rbcL, trnG-trnR, atpA) phylogeny for the clade and mapped reproductive mode (sexual versus apomictic) and ploidy across the resulting tree. Results Our six-stage model for the evolution of obligate apomixis in ferns emphasizes the role played by drought and associated abiotic conditions in the establishment of this reproductive approach. Furthermore, our updated phylogeny of pellaeid ferns reveals repeated origins of obligate apomixis and shows an increase in the frequency of apomixis, and rarity of sexual reproduction, among taxa inhabiting increasingly dry North American deserts. Conclusions Our findings reinforce aspects of other evolutionary, physiological, developmental, and omics-based studies, indicating a strong association between abiotic factors and the establishment of obligate apomixis in ferns. Water limitation, in particular, appears critical to establishment of this reproductive mode.
英文关键词	agamospory apogamy asexual diplospory Dö pp‐ Manton sporogenesis meiotic obligate apogamy premeiotic endomitosis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620820800001
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/2XILL650/349432
作者单位	[Grusz, Amanda L.] Univ Minnesota, Dept Biol, Duluth, MN 55812 USA; [Windham, Michael D.; Pryer, Kathleen M.] Duke Univ, Dept Biol, Durham, NC 27708 USA; [Picard, Kathryn T.; Schuettpelz, Eric] Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20560 USA; [Haufler, Christopher H.] Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA
推荐引用方式 GB/T 7714	Grusz, Amanda L.,Windham, Michael D.,Picard, Kathryn T.,et al. A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae)[J],2021,108(2):263-283.
APA	Grusz, Amanda L.,Windham, Michael D.,Picard, Kathryn T.,Pryer, Kathleen M.,Schuettpelz, Eric,&Haufler, Christopher H..(2021).A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae).AMERICAN JOURNAL OF BOTANY,108(2),263-283.
MLA	Grusz, Amanda L.,et al."A drought-driven model for the evolution of obligate apomixis in ferns: evidence from pellaeids (Pteridaceae)".AMERICAN JOURNAL OF BOTANY 108.2(2021):263-283.