منابع مشابه
Host–Symbiont Interactions: Male-Killers Exposed
Male-killing is one strategy used by maternally transmitted bacterial symbionts to boost transmission and spread in populations. In Drosophila melanogaster, Spiroplasma target males by hijacking an essential, male-limited epigenetic process. A new study reveals clues to the mode of killing.
متن کاملNiche differentiation in the dynamics of host-symbiont interactions: symbiont prevalence as a coexistence problem.
Heritable symbioses can have important ecological effects and have triggered important evolutionary innovations. Current predictions for long-term symbiont prevalence are based on their fitness benefits and vertical transmission rates but ignore nonlinear competitive feedbacks among symbiotic and symbiont-free hosts. We hypothesized that such feedbacks function as stabilizing mechanisms, promot...
متن کاملSymbiont survival and host-symbiont disequilibria under differential vertical transmission.
Interspecific genetic interactions in host-symbiont systems raise intriguing coevolutionary questions and may influence the effectiveness of public health and management policies. Here we present an analytical and numerical investigation of the effects of host genetic heterogeneity in the rate of vertical transmission of a symbiont. We consider the baseline case with a monomorphic symbiont and ...
متن کاملHost plant specialization governed by facultative symbiont.
Materials and methods Samples of A. pisum were collected from natural populations on vetch or white clover, preserved in acetone, and subjected to DNA extraction individually. At each locality, 20 aphids were subjected to specific PCR detection of the endosymbionts as described (S1). The aphid strain TUt, naturally infected with PAUS, was derived from a parthenogenetic female collected on white...
متن کاملThe evolution of host-symbiont dependence
Organisms across the tree of life form symbiotic partnerships with microbes for metabolism, protection and resources. While some hosts evolve extreme dependence on their symbionts, others maintain facultative associations. Explaining this variation is fundamental to understanding when symbiosis can lead to new higher-level individuals, such as during the evolution of the eukaryotic cell. Here w...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plant Physiology
سال: 1978
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.62.6.912