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Phenotypic effects of the U-genome variation in nascent synthetic hexaploids derived from interspecific crosses between durum wheat and its diploid relative Aegilops umbellulata.
PLoS One. 2020; 15(4):e0231129.Plos

Abstract

Aegilops umbellulata is a wild diploid wheat species with the UU genome that is an important genetic resource for wheat breeding. To exploit new synthetic allohexaploid lines available as bridges for wheat breeding, a total of 26 synthetic hexaploid lines were generated through crossing between the durum wheat cultivar Langdon and 26 accessions of Ae. umbellulata. In nascent synthetic hexaploids with the AABBUU genome, the presence of the set of seven U-genome chromosomes was confirmed with U-genome chromosome-specific markers developed based on RNA-seq-derived data from Ae. umbellulata. The AABBUU synthetic hexaploids showed large variations in flowering- and morphology-related traits, and these large variations transmitted well from the parental Ae. umbellulata accessions. However, the variation ranges in most traits examined were reduced under the AABBUU hexaploid background compared with under the diploid parents. The AABBUU and AABBDD synthetic hexaploids were clearly discriminated by several morphological traits, and an increase of plant height and in the number of spikes and a decrease of spike length were commonly observed in the AABBUU synthetics. Thus, interspecific differences in several morphological traits between Ae. umbellulata and A. tauschii largely affected the basic plant architecture of the synthetic hexaploids. In conclusion, the AABBUU synthetic hexaploid lines produced in the present study are useful resources for the introgression of desirable genes from Ae. umbellulata to common wheat.

Authors+Show Affiliations

Graduate School of Agricultural Science, Kobe University, Kobe, Japan.Graduate School of Agricultural Science, Kobe University, Kobe, Japan.Graduate School of Agricultural Science, Kobe University, Kobe, Japan.Institute of Plant Science and Resources, Okayama University, Okayama, Japan.Western Region Agricultural Research Center, National Agriculture and Food Research Organization, Fukuyama, Hiroshima, Japan.Graduate School of Agricultural Science, Kobe University, Kobe, Japan.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

32240263

Citation

Okada, Moeko, et al. "Phenotypic Effects of the U-genome Variation in Nascent Synthetic Hexaploids Derived From Interspecific Crosses Between Durum Wheat and Its Diploid Relative Aegilops Umbellulata." PloS One, vol. 15, no. 4, 2020, pp. e0231129.
Okada M, Michikawa A, Yoshida K, et al. Phenotypic effects of the U-genome variation in nascent synthetic hexaploids derived from interspecific crosses between durum wheat and its diploid relative Aegilops umbellulata. PLoS One. 2020;15(4):e0231129.
Okada, M., Michikawa, A., Yoshida, K., Nagaki, K., Ikeda, T. M., & Takumi, S. (2020). Phenotypic effects of the U-genome variation in nascent synthetic hexaploids derived from interspecific crosses between durum wheat and its diploid relative Aegilops umbellulata. PloS One, 15(4), e0231129. https://doi.org/10.1371/journal.pone.0231129
Okada M, et al. Phenotypic Effects of the U-genome Variation in Nascent Synthetic Hexaploids Derived From Interspecific Crosses Between Durum Wheat and Its Diploid Relative Aegilops Umbellulata. PLoS One. 2020;15(4):e0231129. PubMed PMID: 32240263.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phenotypic effects of the U-genome variation in nascent synthetic hexaploids derived from interspecific crosses between durum wheat and its diploid relative Aegilops umbellulata. AU - Okada,Moeko, AU - Michikawa,Asami, AU - Yoshida,Kentaro, AU - Nagaki,Kiyotaka, AU - Ikeda,Tatsuya M, AU - Takumi,Shigeo, Y1 - 2020/04/02/ PY - 2020/02/05/received PY - 2020/03/17/accepted PY - 2020/4/3/entrez PY - 2020/4/3/pubmed PY - 2020/7/9/medline SP - e0231129 EP - e0231129 JF - PloS one JO - PLoS One VL - 15 IS - 4 N2 - Aegilops umbellulata is a wild diploid wheat species with the UU genome that is an important genetic resource for wheat breeding. To exploit new synthetic allohexaploid lines available as bridges for wheat breeding, a total of 26 synthetic hexaploid lines were generated through crossing between the durum wheat cultivar Langdon and 26 accessions of Ae. umbellulata. In nascent synthetic hexaploids with the AABBUU genome, the presence of the set of seven U-genome chromosomes was confirmed with U-genome chromosome-specific markers developed based on RNA-seq-derived data from Ae. umbellulata. The AABBUU synthetic hexaploids showed large variations in flowering- and morphology-related traits, and these large variations transmitted well from the parental Ae. umbellulata accessions. However, the variation ranges in most traits examined were reduced under the AABBUU hexaploid background compared with under the diploid parents. The AABBUU and AABBDD synthetic hexaploids were clearly discriminated by several morphological traits, and an increase of plant height and in the number of spikes and a decrease of spike length were commonly observed in the AABBUU synthetics. Thus, interspecific differences in several morphological traits between Ae. umbellulata and A. tauschii largely affected the basic plant architecture of the synthetic hexaploids. In conclusion, the AABBUU synthetic hexaploid lines produced in the present study are useful resources for the introgression of desirable genes from Ae. umbellulata to common wheat. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/32240263/Phenotypic_effects_of_the_U_genome_variation_in_nascent_synthetic_hexaploids_derived_from_interspecific_crosses_between_durum_wheat_and_its_diploid_relative_Aegilops_umbellulata_ L2 - https://dx.plos.org/10.1371/journal.pone.0231129 DB - PRIME DP - Unbound Medicine ER -