Results 41 to 50 of about 5,399,182 (405)

The Diversification of Downy Mildew Species Was Not Driven by the Loss of Mycorrhizal Associations or the Evolution of C4 Photosynthesis

open access: yesPhytoFrontiers, 2022
There are approximately 700 obligate biotrophic species grouped into 20 genera (Oomycota, Peronosporaceae) that cause downy mildew diseases. In 2001, Dick hypothesized that diversification of downy mildew species was driven in part by host plant ...
William J. Davis, Jo Anne Crouch
doaj   +1 more source

Crop genetic erosion: understanding and responding to loss of crop diversity.

open access: yesNew Phytologist, 2021
Crop diversity underpins the productivity, resilience, and adaptive capacity of agriculture. Loss of this diversity, termed crop genetic erosion, is therefore concerning. While alarms regarding evident declines in crop diversity have been raised for over
C. Khoury   +14 more
semanticscholar   +1 more source

The Stabilizing Effect Of Intraspecific Genetic Variation On Population Dynamics In Novel And Ancestral Habitats [PDF]

open access: yes, 2009
Recent studies show that intraspecific genetic variation in asexual species may have large effects on community and ecosystem functions, increasing their stability, productivity, and species richness.
Agashe, Deepa
core   +1 more source

The effect of multiple paternity on genetic diversity during and after colonisation [PDF]

open access: yes, 2012
In metapopulations, genetic variation of local populations is influenced by the genetic content of the founders, and of migrants following establishment.
AndrĂ©, C.   +8 more
core   +4 more sources

Dispersal and gene flow in free-living marine nematodes [PDF]

open access: yes, 2013
Dispersal and gene flow determine connectivity among populations, and can be studied through population genetics and phylogeography. We here review the results of such a framework for free-living marine nematodes.
Backeljau, Thierry   +2 more
core   +1 more source

Multilocus sequence analysis of xanthomonads causing bacterial spot of tomato and pepper plants reveals strains generated by recombination among species and recent global spread of Xanthomonas gardneri [PDF]

open access: yes, 2015
Four Xanthomonas species are known to cause bacterial spot of tomato and pepper, but the global distribution and genetic diversity of these species are not well understood.
Bart, Rebecca   +12 more
core   +1 more source

Analysis of protein-coding genetic variation in 60,706 humans

open access: yesNature, 2015
Large-scale reference data sets of human genetic variation are critical for the medical and functional interpretation of DNA sequence changes. Here we describe the aggregation and analysis of high-quality exome (protein-coding region) DNA sequence data ...
James Y. Zou
semanticscholar   +1 more source

First report of the cactus cyst nematode, Cactodera cacti, from a cactus garden in Idaho

open access: yesJournal of Nematology, 2019
In April 2018, a cyst nematode was discovered from soil samples collected from a cactus garden collection in Meridian, Ada County, Idaho, USA. The cactus garden collection field reported was observed with localized areas of heavily stunted plants.
Skantar Andrea M.   +4 more
doaj   +1 more source

Recent Trends in Research on the Genetic Diversity of Plants: Implications for Conservation

open access: yesDiversity, 2019
Genetic diversity and its distribution, both within and between populations, may be determined by micro-evolutionary processes, such as the demographic history of populations, natural selection, and gene flow. In plants, indices of genetic diversity (e.g.
Y. G. S. Carvalho   +3 more
semanticscholar   +1 more source

Genetic Diversity in Nephelium [PDF]

open access: yesHortScience, 1995
Fifty-six accessions involving five taxa of Nephelium (N. Iappaceum varieties lappaceum and pallens, N. hypoleucum, N. ramboutan-ake, and N. cuspidatum) were fingerprinted and evaluated for genetic diversity using isozyme polymorphism. All five taxa were polymorphic for most of the enzymes encoded by 10 putative loci. Number of alleles per locus ranged
Richard M. Manshardt   +2 more
openaire   +1 more source

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