Hybridization is widespread in nature and, in some instances, can result in the formation of a new hybrid species. We investigate the genetic foundation of this poorly understood process through whole-genome analysis of the hybrid Italian sparrow and its progenitors. We find overall balanced yet heterogeneous levels of contribution from each parent species throughout the hybrid genome and identify areas of novel divergence in the hybrid species exhibiting signals consistent with balancing selection. High-divergence areas are disproportionately located on the Z chromosome and overrepresented in gene networks relating to key traits separating the focal species, which are likely involved in reproductive barriers and/or species-specific adaptations. Of special interest are genes and functional groups known to affect body patterning, beak morphology, and the immune system, which are important features of diversification and fitness. We show that a combination of mosaic parental inheritance and novel divergence within the hybrid lineage has facilitated the origin and maintenance of an avian hybrid species.
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http://dx.doi.org/10.1126/sciadv.1602996 | DOI Listing |
Theor Appl Genet
January 2025
Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE - Le Moulon, 91190, Gif-sur-Yvette, France.
Phenomic selection based on parental spectra can be used to predict GCA and SCA in a sparse factorial design. Prediction approaches such as genomic selection can be game changers in hybrid breeding. They allow predicting the genetic values of hybrids without the need for their physical production.
View Article and Find Full Text PDFTheor Appl Genet
January 2025
School of Life Sciences, Guizhou Normal University, Guiyang, 550025, China.
A complete set of monosomic alien addition lines of Radish-Brassica oleracea exhibiting extensive variations was generated and well characterized for their chromosome behaviors and phenotypic characteristics. Monosomic alien addition lines (MAALs) are developed through interspecific hybridization, where an alien chromosome from a relative species is introduced into the genome of the recipient plant, serving as valuable genetic resources. In this study, an allotetraploid Raphanobrassica (RRCC, 2n = 36) was created from the interspecific hybridization between radish (Raphanus sativus, RR, 2n = 18) and Brassica oleracea (CC, 2n = 18).
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Institute of Cotton, Hebei Academy of Agriculture and Forestry Sciences/Key Laboratory of Cotton Biology and Genetic Breeding in Huanghuaihai Semiarid Area, Ministry of Agriculture and Rural Affairs, Shijiazhuang 050000, China.
SKP1 constitutes the Skp1-Cullin-F-box ubiquitin E3 ligase (SCF), which plays a role in plant growth and development and biotic and abiotic stress in ubiquitination. However, the response of the gene family to abiotic and biotic stresses in cotton has not been well characterized. In this study, a total of 72 genes with the conserved domain of SKP1 were identified in four Gossypium species.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Long Ping Branch, College of Biology, Hunan University, Changsha 410125, China.
Phosphoenolpyruvate (PEP) plays a key role in the development of plants and exists in a wide variety of species. Research on the metabolic activities of PEP in plants has received increasing attention. PEP regulates multiple processes in plant growth and development.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Forestry Genetics & Biotechnology of Ministry of Education, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.
The basic helix-loop-helix (bHLH) family members are involved in plant growth and development, physiological metabolism, and various stress response processes. is a major turpentine-producing and wood-producing tree in seasonally dry areas of southern China. Its economic and ecological values are well known.
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