Document Detail


Inherited maternal effects on the drought tolerance of a natural hybrid aquatic plant, Potamogeton anguillanus.
MedLine Citation:
PMID:  17558544     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We tested whether maternal effects have led to the adaptive divergence of strains of the natural hybrid Potamogeton anguillanus, whose putative parents show contrastingly divergent ecologies. To examine the correlation between phenotypic characters and maternal types, we conducted drought experiments and DNA typing using nuclear and chloroplast genes. In the field, we investigated the distribution of the maternal type along the depth and the inshore-offshore gradient. Hybrids of P. malaianus mothers (M-hybrids) and those of P. perfoliatus mothers (P-hybrids) could not be distinguished morphologically under submerged conditions, but differed in drought tolerance. M-hybrids and P. malaianus formed more terrestrial shoots and exhibited higher survival than P-hybrids and P. perfoliatus in drought experiments. The distribution survey clarified that M-hybrids were dominant in shallow and inshore areas, whereas they were almost absent in deeper and offshore areas. These results indicate that the natural hybrid P. anguillanus differs in adaptive values depending on the maternal type. Bidirectional hybridization and heritable maternal effects may have played important roles in its phenotypic adaptation to local environmental conditions.
Authors:
Satoko Iida; Ayumi Yamada; Momoe Amano; Jun Ishii; Yasuro Kadono; Keiko Kosuge
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-06-09
Journal Detail:
Title:  Journal of plant research     Volume:  120     ISSN:  0918-9440     ISO Abbreviation:  J. Plant Res.     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-07-02     Completed Date:  2007-09-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9887853     Medline TA:  J Plant Res     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  473-81     Citation Subset:  IM    
Affiliation:
Research Center for Environmental Genomics, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan. kosuge@kobe-u.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological / genetics*
Base Sequence
DNA Primers
DNA, Plant
Disasters*
Hybridization, Genetic
Potamogetonaceae / genetics,  physiology*
Chemical
Reg. No./Substance:
0/DNA Primers; 0/DNA, Plant

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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