دورية أكاديمية
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Higher order polyploids exhibit enhanced desiccation tolerance in the grass Microchloa caffra.

التفاصيل البيبلوغرافية
العنوان: Higher order polyploids exhibit enhanced desiccation tolerance in the grass Microchloa caffra.
المؤلفون: Marks RA; Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA.; Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA.; Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa., Delgado P; Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa., Makonya GM; Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa.; Washington State University, Irrigated Agriculture Research and Extension Centre, Prosser, WA 99350, USA., Cooper K; Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa., VanBuren R; Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA.; Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA., Farrant JM; Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa.
المصدر: Journal of experimental botany [J Exp Bot] 2024 Jun 07; Vol. 75 (11), pp. 3612-3623.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Oxford University Press Country of Publication: England NLM ID: 9882906 Publication Model: Print Cited Medium: Internet ISSN: 1460-2431 (Electronic) Linking ISSN: 00220957 NLM ISO Abbreviation: J Exp Bot Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Oxford, UK : Oxford University Press,
مواضيع طبية MeSH: Poaceae*/genetics , Poaceae*/physiology , Polyploidy*, South Africa ; Desiccation ; Adaptation, Physiological/genetics
مستخلص: Desiccation tolerance evolved recurrently across diverse plant lineages to enable survival in water-limited conditions. Many resurrection plants are polyploid, and several groups have hypothesized that polyploidy contributed to the evolution of desiccation tolerance. However, due to the vast phylogenetic distance between resurrection plant lineages, the rarity of desiccation tolerance, and the prevalence of polyploidy in plants, this hypothesis has been difficult to test. Here, we surveyed natural variation in morphological, reproductive, and desiccation tolerance traits across several cytotypes of a single species to test for links between polyploidy and increased resilience. We sampled multiple natural populations of the resurrection grass Microchloa caffra across an environmental gradient ranging from mesic to xeric in South Africa. We describe two distinct ecotypes of M. caffra that occupy different extremes of the environmental gradient and exhibit consistent differences in ploidy, morphological, reproductive, and desiccation tolerance traits in both field and common growth conditions. Interestingly, plants with more polyploid genomes exhibited consistently higher recovery from desiccation, were less reproductive, and were larger than plants with smaller genomes and lower ploidy. These data indicate that selective pressures in increasingly xeric sites may play a role in maintaining and increasing desiccation tolerance and are mediated by changes in ploidy.
(© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology.)
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معلومات مُعتمدة: PRFB-1906094 National Science Foundation; 2213983 DBI
فهرسة مساهمة: Keywords: Desiccation tolerance; local adaptation; natural variation; polyploidy; resilience; resurrection plants
تواريخ الأحداث: Date Created: 20240321 Date Completed: 20240607 Latest Revision: 20240609
رمز التحديث: 20240609
مُعرف محوري في PubMed: PMC11156804
DOI: 10.1093/jxb/erae126
PMID: 38511472
قاعدة البيانات: MEDLINE
الوصف
تدمد:1460-2431
DOI:10.1093/jxb/erae126