Burkholderia species are the most common and preferred nodulating symbionts of the Piptadenia group (tribe Mimoseae).
Burkholderia species are the most common and preferred nodulating symbionts of the Piptadenia group (tribe Mimoseae).
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DOI：
10.1371/journal.pone.0063478
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Moulin L
中科院分区：
文献类型：
--
作者：
Bournaud C;de Faria SM;dos Santos JM;Tisseyre P;Silva M;Chaintreuil C;Gross E;James EK;Prin Y;Moulin L
豆科伯克霍尔德菌共生体（也称为α-根瘤菌）起源古老，是巴西含羞草属植物的主要固氮共生体。我们通过研究Piptadenia（P.）属的共生体，Parapiptadenia（Pp.），假甲藻属（Pseudopiptadenia），Pityrocarpa（Py.），Anadenanthera A.和Microlobius（Mi.），所有这些植物都是巴西本地植物，在遗传学上与含羞草属植物接近，并且它们与含羞草属植物一起构成“Piptadenia组”。我们的特点是196株样品从18个物种从17个地点在巴西使用两个中性标记和两个共生基因，以评估他们的物种隶属关系和共生基因的进化。我们发现伯克霍尔德氏菌是常见的和高度多样化的共生体的种在Piptadenia组，包括9个伯克霍尔德氏菌物种，其中3个是新的，一个从未被报道为共生（B。苯酚尿苷）。然而，α-根瘤菌也被检测到，偶尔占优势的几个物种。同一豆科植物的共生模式在不同地点之间变化很大，甚至从β-根瘤菌转变为α-根瘤菌。共接种试验表明，所有的Piptadenia组物种对伯克霍尔德氏菌基因型的亲和力很强，与Mi的例外。恶臭中性和共生标记的系统发育分析表明，共生基因在伯克霍尔德氏菌的Piptadenia组主要通过垂直转移，但也通过水平转移在两个物种的进化。
Burkholderia legume symbionts (also called α-rhizobia) are ancient in origin and are the main nitrogen-fixing symbionts of species belonging to the large genus Mimosa in Brazil. We investigated the extent of the affinity between Burkholderia and species in the tribe Mimoseae by studying symbionts of the genera Piptadenia (P.), Parapiptadenia (Pp.), Pseudopiptadenia (Ps.), Pityrocarpa (Py.), Anadenanthera (A.) and Microlobius (Mi.), all of which are native to Brazil and are phylogenetically close to Mimosa, and which together with Mimosa comprise the “Piptadenia group”. We characterized 196 strains sampled from 18 species from 17 locations in Brazil using two neutral markers and two symbiotic genes in order to assess their species affiliations and the evolution of their symbiosis genes. We found that Burkholderia are common and highly diversified symbionts of species in the Piptadenia group, comprising nine Burkholderia species, of which three are new ones and one was never reported as symbiotic (B. phenoliruptrix). However, α-rhizobia were also detected and were occasionally dominant on a few species. A strong sampling site effect on the rhizobial nature of symbionts was detected, with the symbiont pattern of the same legume species changing drastically from location to location, even switching from β to α-rhizobia. Coinoculation assays showed a strong affinity of all the Piptadenia group species towards Burkholderia genotypes, with the exception of Mi. foetidus. Phylogenetic analyses of neutral and symbiotic markers showed that symbiosis genes in Burkholderia from the Piptadenia group have evolved mainly through vertical transfer, but also by horizontal transfer in two species.
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影响因子：
3.4
作者：
Barrett, CF;Parker, MA
通讯作者：
Parker, MA
影响因子：
5.1
作者：
Cummings, Stephen P.;Gyaneshwar, Prasad;James, Euan K.
通讯作者：
James, Euan K.
影响因子：
2.7
作者：
Freitas, A. D. S.;Sampaio, E. V. S. B.;Fernandes, A. R.
通讯作者：
Fernandes, A. R.
DOI：
10.1099/ijs.0.64873-0
发表时间：
2007-05-01
影响因子：
2.8
作者：
Chen, Wen-Ming;de Faria, Sergio M.;Vandamme, Peter
通讯作者：
Vandamme, Peter
DOI：
10.1099/00207713-51-5-1729
发表时间：
2001-09-01
影响因子：
2.8
作者：
Chen, WM;Laevens, S;Vandamme, P
通讯作者：
Vandamme, P