Drought Response Diversification in African Protea Species

Autor:	Kent E. Holsinger, Ann Evankow, Katherine Bibee Wolfson, Jane E. Carlson, M. Shane Heschel
Rok vydání:	2014
Předmět:	Stomatal conductance Drought stress fungi food and beverages Plant Science Diversification (marketing strategy) Biology Protea biology.organism_classification chemistry.chemical_compound chemistry Genus Chlorophyll Cape Botany Abscisic acid Ecology Evolution Behavior and Systematics
Zdroj:	International Journal of Plant Sciences. 175:442-449
ISSN:	1537-5315 1058-5893
DOI:	10.1086/675573
Popis:	Premise of research. Evolutionary radiations can be driven by physiological tolerances. Protea is a species-rich genus in the Cape Floristic Region of South Africa and provides the opportunity to examine whether drought response traits may have contributed to differentiation in this stress-tolerant genus. Commonly utilized drought responses might be indicative of traits important to species diversification in stressful environments.Methodology. We studied how greenhouse-grown plants of six white Protea species physiologically responded to drought stress. We measured leaf-level physiological traits such as stomatal conductance, temperature, pubescence, chlorophyll, and abscisic acid (ABA) content.Pivotal results. Most traits showed similar drought responses across all six species and 29 populations we examined. Only for foliar ABA content, leaf hair density, and foliar chlorophyll content did species respond to drought in different ways, indicating that some differences in plasticity might be important to ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21a6ac2de774a23c1c4c0630e31ee112 https://doi.org/10.1086/675573 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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