The conservation of rare and endangered plants

Holsinger, Kent E.; Gottlieb, L. D.

doi:10.1016/0169-5347(89)90071-2

Cited by 131 publications

(144 citation statements)

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“…Therefore, preservation of genetic diversity has become a common objective of most conservation programmes and defining genetic diversity within and among natural populations is a necessary first step towards achieving this goal (Holsinger and Gottlieb, 1991). Jamun (Syzygium cumini) is a large evergreen multipurpose tree of family Myrtaceae upto 15 to 30 m in height (Samba -Murthy and Subrahmanyam, 1989).…”

Section: Introductionmentioning

confidence: 99%

Genetic differentiation and diversity analysis of medicinal tree Syzygium cumini (Myrtaceae) from ecologically different regions of India

Khan

Vaishali

Sharma

2010

Physiol Mol Biol Plants

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Section: Introductionmentioning

confidence: 99%

Genetic differentiation and diversity analysis of medicinal tree Syzygium cumini (Myrtaceae) from ecologically different regions of India

Khan

Vaishali

Sharma

2010

Physiol Mol Biol Plants

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“…The loss of genetic variability is predicted to have a negative influence on the capacity of a species to withstand stochastically-induced environmental changes (Ellstrand and Elam, 1993). Accordingly, in order to devise management strategies, conservation studies should take into account not only the levels of genetic variation present within and among populations but how they are partitioned (Hamrick, 1983;Holsinger and Gottlieb, 1991;Ellstrand and Elam, 1993). This knowledge is crucial for those plants having a low effective population size and a fragmented habitat, since the effects of genetic drift and inbreeding depression may have a noteworthy influence on the concomitant genetic impoverishment of the species (Foré and Guttman, 1999).…”

Section: Introductionmentioning

confidence: 99%

Genetic variability in a narrow endemic snapdragon (Antirrhinum subbaeticum, Scrophulariaceae) using RAPD markers

et al. 2002

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Antirrhinum subbaeticum is an endangered species inhabiting fragmented limestone cliffs. In the last 3 years, a drastic population decline has been observed in three of four known populations and the estimated number of surviving individuals is now close to 400. A RAPD study was conducted to evaluate the levels of genetic variation present in this species to improve conservation guidelines. Thity-nine polymorphic products identified 66.1% of the samples by unique RAPD multilocus profiles. A cluster analysis grouped the samples into two broad groups corresponding to northern or southern provenances. AMOVA analysis showed that only 17.7% of the genetic diversity was partitioned within populations. These results are in contrast to data available for

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“…Endemic species with restricted distributions are particularly at risk as their population numbers are often low and population loss is likely to result in a significant reduction in tbe number of their remaining indi\ iduals. Altbougb babitat protection is normally considered to be of foremost importance in tbe conservation of an endangered species, maintenance of bigb levels of genetic diversity within tbe species is essential to allow tbe species to respond to tbe selection pressures imposed by pests and disease and to facilitate adaptation to future environmental change (Barrett & Kobn, 1991;Holsinger & Gottlieb, 1991 ;Scbaal, Levericb & Rogstad, 1991).…”

Section: Introductionmentioning

confidence: 99%

Low genetic diversity in the Scottish endemicPrimula scoticaHook.

Glover

Abbott

1995

New Phytologist

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S t J M M .\ R YPrimtila scotica Hook., a rare Scottish endemic, is threatened with extinction due to habitat destruction. A survey of genetic variability within the species was conducted on fi\-e populations from the Orkney islands and nine from the Scottish mainland. Isozyme analysis revealed variation between individuals at only one of 15 enzyme encoding loci examined, while a survey of DNA sequence variation via RAPD analysis revealed no genetic diversity either within or between a subsample of four populations surveyed. Individuals exbibited a 'fixed' heterozygous genotype at seven of the enzyme encoding loci, indicating that P. scotica is of allopolyploid origin. Despite the high level of heterozygosity per individual and the biochemical diversity that may stem from it, the species remains restricted to a very specific habitat. Implications for the conserx-ation of the species are considered, including the need for habitat protection.

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The conservation of rare and endangered plants

Cited by 131 publications

References 0 publications

Genetic differentiation and diversity analysis of medicinal tree Syzygium cumini (Myrtaceae) from ecologically different regions of India

Genetic differentiation and diversity analysis of medicinal tree Syzygium cumini (Myrtaceae) from ecologically different regions of India

Genetic variability in a narrow endemic snapdragon (Antirrhinum subbaeticum, Scrophulariaceae) using RAPD markers

Low genetic diversity in the Scottish endemicPrimula scoticaHook.

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