The ectopic expression of PttKN1 gene causes pleiotropic alternation of morphology in transgenic carnation (Dianthus caryophyllus L.)

• Autorzy: Meng L.-S. , Song J.-P. , Sun S.-B. , Wang C.-Y.
• Języki publikacji: EN

Abstrakty

EN

Carnation (Dianthus caryophyllus L.) is one of the most important ornamental plants in the world. Though morphological modification of carnation is very important to its commercial value, there have been no relevant reports until now. PttKN1 (Populus tremula × Tremuoides knotted1), isolated from the vascular cambial region of hybrid aspen, is a novel member ofKNOXgene family. In this paper, we transformed 35S:PttKN1 to carnation via Agrobacterium tumefaciens. All primary transformants subsequently obtained were placed into phenotypic categories and selfpollinated. A total of 32 T0 progeny with aberrant phenotypes were obtained. PCR assay proved the validity of these transgenic plants. Phenotypes of 32 35S:PttKN1 plants were distinct from those of wild-type plants, including: (1) modification of phyllotaxis (15/32): wild-type carnation was with typical opposite phyllotaxis, while transgenic plants displayed tricussate whorled and multiple-cussate whorled phyllotaxis. Irregular modification of phyllotaxis was also observed; (2) modification of stem (9/32): wild-type stems were round; however, some transgenic plants exhibited much thicker and flatter stem; (3) the whole transgenic plants of carnation (8/32) became dwarf. These morphological modifications of carnation indicate that we have successfully attained some novel lines of carnation. These lines can have potential practical applications. In conclusion, the selection of stably genetic lines is discussed.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2009
• Tom: 31
• Numer: 6
• Opis fizyczny: p.1155-1164,fig.,ref.

Twórcy

autor

Meng L.-S.

• College of Life Science, Tongji University, 200092 Shanghai, China
• School of Life Science, LanZhou University, 730000 Lanzhou, China

autor

Song J.-P.

• School of YuanPei, Shaoing University, 312000 Shaoxing, China

autor

Sun S.-B.

• Gansu College of Traditional Chinese Medicine, 730000 Lanzhou, China

autor

Wang C.-Y.

• School of Life Science, LanZhou University, 730000 Lanzhou, China

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