Tae-Woong Bae

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Abscisic acid (ABA) plays an important role in environmental stress responses of higher plants during vegetative growth via regulating the expression of numerous stress-responsive genes. The gene ABF3 encodes a transcription factor for the expression of ABA-responsive genes. Here we report the transformation of lettuce (Lactuca sativa L. cv. Chongchima,(More)
Efficient procedures for regeneration and Agrobacterium-mediated transformation were established for Agrostis mongolica Roshev. and generated transgenic plants tolerant to drought and heat stresses using a regulatory gene from Arabidopsis, ABF3, which controls the ABA-dependent adaptive responses. The identification and selection of regenerable and(More)
Phytochrome A (phyA) in higher plants is known to function as a far-red/shade light-sensing photoreceptor in suppressing shade avoidance responses (SARs) to shade stress. In this paper, the Avena PHYA gene was introduced into creeping bentgrass (Agrostis stolonifera L.) and zoysiagrass (Zoysia japonica Steud.) to improve turf quality by suppressing the(More)
Plants can acclimate by using tropisms to link the direction of growth to environmental conditions. Hydrotropism allows roots to forage for water, a process known to depend on abscisic acid (ABA) but whose molecular and cellular basis remains unclear. Here we show that hydrotropism still occurs in roots after laser ablation removed the meristem and root(More)
Herbicide-tolerant Zoysia grass has been previously developed through Agrobacterium-mediated transformation. We investigated the effects of genetically modified (GM) Zoysia grass and the associated herbicide application on bacterial community structure by using culture-independent approaches. To assess the possible horizontal gene transfer (HGT) of(More)
With the purpose of improving ginsenoside content in adventitious root cultures of Korean wild ginseng (Panax ginseng Meyer), the roots were treated with different dosages of γ-ray (5, 10, 25, 50, 75, 100, and 200 Gy). The growth of adventitious roots was inhibited at over 100 Gy. The irradiated adventitious roots showed significant variation in the(More)
The in vitro pepsin digestion assay is the international standard for assessing the safety or risk of novel proteins newly produced in transgenic crops. However, this protocol, based on the degradation of protein purified from Escherichia coli, has recently been criticized for problems such as its objective detection limit. Here, we estimated the digestion(More)
Knowledge about pollen viability is important when evaluating the risk of genetically modified (GM) plants. Here, staining via iodine potassium iodide (IKI) or triphenyl tetrazolium chloride (TTC) could not distinguish between live and dead pollen from Zoysia japonica. Therefore, to obtain a reliable assessment of such viability and longevity, we developed(More)
Four-leaf white clover is not found easily in nature due to its low appearance rate (1 in 10,000). Because people believe that it brings good luck and like to either keep it or present it to a loved one, it has commercial and ornamental value. To breed four-leaf clover, we exposed its flowers to γ-rays at the pollination stage. The M1 seeds produced(More)