No disruption of rhizobial symbiosis during early stages of cowpea domestication
No disruption of rhizobial symbiosis during early stages of cowpea domestication
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豇豆驯化早期阶段根瘤菌共生没有受到破坏
DOI：
10.1111/evo.14424
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发表时间：
2022
期刊：
影响因子：
3.3
通讯作者：
Sachs, Joel L.
中科院分区：
文献类型：
--
作者：
Ortiz‐Barbosa, Gabriel S.;Torres‐Martínez, Lorena;Manci, Angela;Neal, Sierra;Soubra, Tarek;Khairi, Fizzah;Trinh, Jerry;Cardenas, Paola;Sachs, Joel L.
现代农业强烈选择地上植物结构，而经常忽略地下特征，这些特征之间的进化权衡被预测会破坏宿主对微生物群的控制。此外，漂移、近亲繁殖和作物共生的宽松选择可能会破坏支持有益微生物的植物机制。研究了驯化对豇豆与根瘤缓生根瘤菌共生固氮的影响。我们将全基因组分析与温室接种研究相结合，研究了野生豇豆和早期驯化豇豆基因型的基因组多样性、遗传力和共生性状变异。豇豆在早期驯化过程中经历了基因组多样性的适度下降。然而，驯化豇豆通过与固氮根瘤菌形成更多根瘤和制裁非固氮菌株，有效地响应了共生效率的变化。与野生豇豆相比，驯化群体将更多的寄主组织投入到根瘤中。与大豆和小麦不同，豇豆在驯化过程中没有明显的共生退化迹象。与这些作物相比，驯化豇豆遇到的瓶颈不那么严重，而且在非洲培育豇豆地方品种的低营养条件可能有利于从共生中获得实质性利益的植物基因型。育种者在很大程度上忽略了共生性状，但人工选择改善植物对微生物群的反应可以提高植物的性能和可持续性。
Modern agriculture intensely selects aboveground plant structures, while often neglecting belowground features, and evolutionary tradeoffs between these traits are predicted to disrupt host control over microbiota. Moreover, drift, inbreeding, and relaxed selection for symbiosis in crops might degrade plant mechanisms that support beneficial microbes. We studied the impact of domestication on the nitrogen-fixing symbiosis between cowpea and root-nodulatingBradyrhizobium. We combined genome-wide analyses with a greenhouse inoculation study to investigate genomic diversity, heritability, and symbiosis trait variation among wild and early-domesticated cowpea genotypes. Cowpeas experienced modest decreases in genome-wide diversity during early domestication. Nonetheless, domesticated cowpeas responded efficiently to variation in symbiotic effectiveness, by forming more root nodules with nitrogen-fixing rhizobia and sanctioning nonfixing strains. Domesticated populations invested a larger proportion of host tissues into root nodules than wild cowpeas. Unlike soybean and wheat, cowpea showed no compelling evidence for degradation of symbiosis during domestication. Domesticated cowpeas experienced a less severe bottleneck than these crops and the low nutrient conditions in Africa where cowpea landraces were developed likely favored plant genotypes that gain substantial benefits from symbiosis. Breeders have largely neglected symbiosis traits, but artificial selection for improved plant responses to microbiota could increase plant performance and sustainability.
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影响因子：
3.8
作者：
Bernardo R
通讯作者：
Bernardo R
影响因子：
4.1
作者：
Kaneko, T;Nakamura, Y;Tabata, S
通讯作者：
Tabata, S
DOI：
10.1093/icb/42.2.369
发表时间：
2002-04
期刊：
--
影响因子：
--
作者：
E. Simms;David G. Taylor
通讯作者：
E. Simms;David G. Taylor
豆类中的细胞自主制裁针对的是混合感染根瘤中无效的根瘤菌。
DOI：
--
发表时间：
2017
期刊：
American-Eurasian journal of botany
影响因子：
--
作者：
J. Regus;K. Quides;M. O’Neill;Rina Suzuki;Elizabeth A. Savory;Jeff H. Chang;Joel L. Sachs
通讯作者：
Joel L. Sachs
快速和缓慢生长的大豆根瘤菌菌株在几种温带和热带豆科植物上的结瘤和固氮作用
影响因子：
4.9
作者：
M. Chamber;E. E. Iruthayathas
通讯作者：
E. E. Iruthayathas