| a low mutation rate for chloroplast microsatellites. | we used chloroplast simple sequence repeats (cpssrs) to examine whether there is any variation present in the chloroplast genome of pinus torreyana (parry ex carrière) that may previously not have been detected using rflps. analysis of 17 cpssr loci showed no variation, which is consistent with previous cprflp work and confirms that the species is descended from an original, highly monomorphic population following a bottleneck. this lack of biological variation in the chloroplast genome of p. to ... | 1999 | 10511569 |
| the influence of summertime fog and overcast clouds on the growth of a coastal californian pine: a tree-ring study. | the coast of california is home to numerous rare, endemic conifers and other plants that are limited in distribution by drought sensitivity and the summer-dry climate that prevails across most of the state. ecologists have long assumed that some coastal plant populations survived the early pleistocene transition to a warmer and drier environment because they benefit from frequent fog and stratus clouds that provide water and shade during the rainless summer. one such population is that of torrey ... | 2008 | 18368424 |
| finding a (pine) needle in a haystack: chloroplast genome sequence divergence in rare and widespread pines. | critical to conservation efforts and other investigations at low taxonomic levels, dna sequence data offer important insights into the distinctiveness, biogeographic partitioning and evolutionary histories of species. the resolving power of dna sequences is often limited by insufficient variability at the intraspecific level. this is particularly true of studies involving plant organelles, as the conservative mutation rate of chloroplasts and mitochondria makes it difficult to detect polymorphis ... | 2010 | 20331774 |