Dataset Information

Evolutionary transition from resprouter to seeder life history in two Erica (Ericaceae) species: insights from seedling axillary buds.

ABSTRACT:

Background and aims

The genus Erica represents the epitome of plant biodiversity in the South African Cape region. It includes seeder and resprouter species, but both species diversity and narrow endemism are tightly associated with the seeder habit. It also includes 'mixed' species, in which both seeder and resprouter life histories are found. This intraspecific variation in life history is genetically based.

Methods

The cotyledonary region and basal stem of seeder and resprouter seedlings of two 'mixed' species, Erica calycina and E. coccinea, were examined to detect morphological and anatomical differences in axillary bud development between regeneration forms.

Key results

While at least some bud activity was observed for resprouter seedlings, none was detected for seeder seedlings. A closer examination allowed the detection of some axillary buds in seeder seedlings of the two species, but they appeared in an unequivocally atrophied state.

Conclusions

The seeder and resprouter life histories are two character states and the seeder one (i.e. loss of resprouting) is derived within these two Erica species. Results allow the hypothesis that the loss of resprouting in a fire-prone scenario such as the Cape fynbos has promoted high diversification rates in seeder Erica lineages.

SUBMITTER: Verdaguer D

PROVIDER: S-EPMC4246852 | biostudies-literature | 2005 Mar

REPOSITORIES: biostudies-literature

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Publications

Evolutionary transition from resprouter to seeder life history in two Erica (Ericaceae) species: insights from seedling axillary buds.

Verdaguer Dolors D Ojeda Fernando F

Annals of botany 20050120 4

<h4>Background and aims</h4>The genus Erica represents the epitome of plant biodiversity in the South African Cape region. It includes seeder and resprouter species, but both species diversity and narrow endemism are tightly associated with the seeder habit. It also includes 'mixed' species, in which both seeder and resprouter life histories are found. This intraspecific variation in life history is genetically based.<h4>Methods</h4>The cotyledonary region and basal stem of seeder and resprouter ...[more]

PMID: 15661748

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Dataset Information

Evolutionary transition from resprouter to seeder life history in two Erica (Ericaceae) species: insights from seedling axillary buds.

Background and aims

Methods

Key results

Conclusions

Publications

Evolutionary transition from resprouter to seeder life history in two Erica (Ericaceae) species: insights from seedling axillary buds.

Similar Datasets

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