Leaf serration in seedlings of heteroblastic woody species enhance plasticity and performance in gaps but not in the understory

Gamage, Harshi K. (2010) Leaf serration in seedlings of heteroblastic woody species enhance plasticity and performance in gaps but not in the understory. International Journal of Ecology, 2010 Article ID 683589: . doi:10.1155/2010/683589


Author Gamage, Harshi K.
Title Leaf serration in seedlings of heteroblastic woody species enhance plasticity and performance in gaps but not in the understory
Journal name International Journal of Ecology   Check publisher's open access policy
ISSN 1687-9708
1687-9716
Publication date 2010
Year available 2010
Sub-type Article (original research)
DOI 10.1155/2010/683589
Open Access Status DOI
Volume 2010
Issue Article ID 683589
Total pages 9
Place of publication New York, NY United States
Publisher Hindawi Publishing Corporation
Collection year 2010
Language eng
Subject 1105 Dentistry
2303 Ecology
Abstract Leaf heteroblasty refers to dramatic ontogenetic changes in leaf size and shape, in contrast to homoblasty that exhibits little change, between seedling and adult stages. This study examined whether the plasticity in leaf morphology of heteroblastic species would be an advantage for their survival and growth over homoblastic congeners to changes in light. Two congeneric pairs of homoblastic (Hoheria lyallii, Aristotelia serrata) and heteroblastic species (H. sexstylosa, A. fruticosa) were grown for 18 months in canopy gap and forest understory sites in a temperate rainforest in New Zealand. Heteroblastic species that initially had serrated leaves reduced leaf serration in the understory, but increased in the gaps. Heteroblastic species also produced thicker leaves and had higher stomatal pore area (density × aperture length), maximum photosynthetic rate, survival, and greater biomass allocation to shoots than homoblastic relatives in the gaps. Findings indicate that increased leaf serration in heteroblastic species is an advantage over homoblastic congeners in high light.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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