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Citation for Study 13951

Citation title: "New insights into character evolution, hybridization and diversity of Indian Nymphaea (Nymphaeaceae): evidence from molecular and morphological data.".

Study name: "New insights into character evolution, hybridization and diversity of Indian Nymphaea (Nymphaeaceae): evidence from molecular and morphological data.".

This study is part of submission 13951 (Status: Published).

Citation

Dkhar J., Kumaria S.K., Rama rao S., & Tandon P. 2013. New insights into character evolution, hybridization and diversity of Indian Nymphaea (Nymphaeaceae): evidence from molecular and morphological data. Systematics and Biodiversity, : 1-10.

Authors

• Dkhar J. (submitter) 8860221398
• Kumaria S.K.
• Rama rao S.
• Tandon P.

Abstract

A comprehensive reassessment of Indian Nymphaea (Nymphaeaceae) based on morphology, RAPD, and nucleotide sequence data of the ITS, trnK intron, matK and rbcL gene was conducted. Although considerable morphological variations have been reported, pollen colour and rhizome shape are two characters which have not been mentioned in previous studies. The transformation from yellow to white coloured pollen may have evolved independently and is probably associated with a strong selective pressure acted upon by the animal pollinators on white pollen of N. pubescens and N. rubra. Rhizome shape could easily discriminate among subgenera; the difference in shape (triangular, globular, and cylindrical) probably highlights the success in their distribution. Our studies using RAPD revealed high genetic variability among individuals of N. caerulea. This may be attributed to the breeding system followed, which could be an outcrossing species. But the lack of genetic diversity in N. tetragona is probably due to founder events, whereby a solitary founder individual from China could have resulted in the establishment of this single population of ~25?30 individuals with no detectable variations. Molecular cloning of the ITS region of N. rubra, necessitated by the presence of additional signals in the sequencing chromatogram, confirmed the origin of this plant taxon through hybridization involving N. lotus and N. pubescens as the parental species.

Keywords

founder events, hybrid, molecular cloning, Nymphaea, pollen colour, rhizome shape

External links

• DOI: 10.1080/14772000.2013.773949

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13951
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref21785,
  	 author = {Jeremy  Dkhar and Suman Khatri Kumaria and Satyawada  Rama Rao and Pramod  Tandon},
  	 title = {New insights into character evolution, hybridization and diversity of Indian Nymphaea (Nymphaeaceae): evidence from molecular and morphological data.},
  	 year = {2013},
  	 keywords = {founder events, hybrid, molecular cloning, Nymphaea, pollen colour, rhizome shape},
  	 doi = {10.1080/14772000.2013.773949},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematics and Biodiversity},
  	 volume = {},
  	 number = {},
  	 pages = {1--10},
  	 abstract = {A comprehensive reassessment of Indian Nymphaea (Nymphaeaceae) based on morphology, RAPD, and nucleotide sequence data of the ITS, trnK intron, matK and rbcL gene was conducted. Although considerable morphological variations have been reported, pollen colour and rhizome shape are two characters which have not been mentioned in previous studies. The transformation from yellow to white coloured pollen may have evolved independently and is probably associated with a strong selective pressure acted upon by the animal pollinators on white pollen of N. pubescens and N. rubra. Rhizome shape could easily discriminate among subgenera; the difference in shape (triangular, globular, and cylindrical) probably highlights the success in their distribution. Our studies using RAPD revealed high genetic variability among individuals of N. caerulea. This may be attributed to the breeding system followed, which could be an outcrossing species. But the lack of genetic diversity in N. tetragona is probably due to founder events, whereby a solitary founder individual from China could have resulted in the establishment of this single population of ~25?30 individuals with no detectable variations. Molecular cloning of the ITS region of N. rubra, necessitated by the presence of additional signals in the sequencing chromatogram, confirmed the origin of this plant taxon through hybridization involving N. lotus and N. pubescens as the parental species.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 21785
  AU  - Dkhar,Jeremy 
  AU  - Kumaria,Suman Khatri
  AU  - Rama Rao,Satyawada 
  AU  - Tandon,Pramod 
  T1  - New insights into character evolution, hybridization and diversity of Indian Nymphaea (Nymphaeaceae): evidence from molecular and morphological data.
  PY  - 2013
  KW  - founder events
  KW  - hybrid
  KW  - molecular cloning
  KW  - Nymphaea
  KW  - pollen colour
  KW  - rhizome shape
  UR  - http://dx.doi.org/10.1080/14772000.2013.773949
  N2  - A comprehensive reassessment of Indian Nymphaea (Nymphaeaceae) based on morphology, RAPD, and nucleotide sequence data of the ITS, trnK intron, matK and rbcL gene was conducted. Although considerable morphological variations have been reported, pollen colour and rhizome shape are two characters which have not been mentioned in previous studies. The transformation from yellow to white coloured pollen may have evolved independently and is probably associated with a strong selective pressure acted upon by the animal pollinators on white pollen of N. pubescens and N. rubra. Rhizome shape could easily discriminate among subgenera; the difference in shape (triangular, globular, and cylindrical) probably highlights the success in their distribution. Our studies using RAPD revealed high genetic variability among individuals of N. caerulea. This may be attributed to the breeding system followed, which could be an outcrossing species. But the lack of genetic diversity in N. tetragona is probably due to founder events, whereby a solitary founder individual from China could have resulted in the establishment of this single population of ~25?30 individuals with no detectable variations. Molecular cloning of the ITS region of N. rubra, necessitated by the presence of additional signals in the sequencing chromatogram, confirmed the origin of this plant taxon through hybridization involving N. lotus and N. pubescens as the parental species.
  L3  - 10.1080/14772000.2013.773949
  JF  - Systematics and Biodiversity
  VL  - 
  IS  - 
  SP  - 1
  EP  - 10
  ER  -