Interspecific cross-hybrids ofNicotiana tabacumL. cv. (gla.) S ‘K326’ withNicotiana alata

Autor:	Xiaoli Zhou, Shiyi Yang, Jinran Dai, Suiyun Chen, Haili He, Longhui Ren, Jugou Liao, Zhuangzhuang Chen
Rok vydání:	2017
Předmět:	0106 biological sciences 0301 basic medicine Nicotiana alata biology Sterility Nicotiana tabacum fungi Cytoplasmic male sterility food and beverages Plant Science biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Plant virus Botany Genetics Plant breeding Agronomy and Crop Science Gene 010606 plant biology & botany Hybrid
Zdroj:	Plant Breeding. 136:427-435
ISSN:	0179-9541
DOI:	10.1111/pbr.12474
Popis:	In order to introduce the Tomato Spotted Wilt Virus (TSWV) resistance from Nicotiana alata into Nicotiana tabacum, a cytoplasmic male sterility (CMS) line of N. tabacum (N. tabacum L. cv. (gla.) S ‘K326’), was successfully crossed with N. alata. Despite a high DNA content variability, F1 hybrids could be classified in two subgroups, a major one encompassing fertile hybrids morphologically similar to their tobacco maternal parent but TSWV sensitive, and a minor one displaying sterile hybrids showing an intermediate phenotype and TSWV resistant. In order to elucidate the unexpected fertility recovery of the fertile F1 plants, some N. alata fertility restoration ppr genes were cloned and were shown to be differentially expressed between parental lineages as well as between both F1 subgroups, suggesting that N. alata contains fertility restoring allele able to overcome the CMS of N. tabacum.
Databáze:	OpenAIRE
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