Transgenic tall fescue containing the Agrobacterium tumefaciens ipt gene shows enhanced cold tolerance

Hu, Yuanlei; Wang, Jia; Wang, Jun‐Dan; Zhang, Yanqin; Yang, Lili; Zhang, Lin

doi:10.1007/s00299-004-0863-2

Cited by 69 publications

(37 citation statements)

References 15 publications

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“…H 2 O 2 pre-treatment induced salt-tolerance of maize plants and pretreatment of seed with H 2 O 2 also improves salt tolerance of wheat seedlings by alleviation of oxidative damage (Wahid et al 2007). Transgenic tall fescue expressing a gene of isopentenyl transferase (ipt), which is a key enzyme in the biosynthetic pathway of cytokinins, increased cytokinin production and enhanced the tolerance to lower temperatures (Hu et al 2005). In this study, we tried to enhance the chilling tolerance of Manila grass by the pre-treatment with SA, CaCl 2 , H 2 O 2 and 6-benzylaminopurine (6-BA).…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Enhanced chilling tolerance in Zoysia matrella by pre-treatment with salicylic acid, calcium chloride, hydrogen peroxide or 6-benzylaminopurine

Wang¹,

Yang²,

Zhang³

et al. 2009

Biologia plant.

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Following leaf application of salicylic acid (SA), calcium chloride, hydrogen peroxide and 6-benzylaminopurine (BA), Manila grass (Zoysia matrella) plants were exposed to day/night temperature of 7/2 °C for 120 h in a growth chamber. The lower content of malondialdehyde (MDA) and H 2 O 2 and higher activities of ascorbate peroxidase (APX), guaiacol peroxidase (POD) and catalase (CAT) during exposure to low temperature in pre-treated plants in comparison with control plants demonstrated that these compounds improved the chilling tolerance of Manila grass.

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Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Enhanced chilling tolerance in Zoysia matrella by pre-treatment with salicylic acid, calcium chloride, hydrogen peroxide or 6-benzylaminopurine

Wang¹,

Yang²,

Zhang³

et al. 2009

Biologia plant.

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“…Recently, molecular breeding such as genetic transformation has become a popular biotechnological tool for improving forage quality as well as improving tolerance to various environmental stresses (Spangenberg et al, 1998). Transgenic technologies developed for genetic manipulation of forage grasses have opened up opportunities for forage improvement (Wu et al, 2005;Hu et al, 2005; *Corresponding author. E-mail: sanghoon@korea.kr.…”

Section: Introductionmentioning

confidence: 99%

Factors influencing callus induction and plant regeneration of Dahurian wildrye grass (Elymus dahuricus L.)

Lee#¹,

Chinzorig²,

Choi³

et al. 2012

Afr. J. Biotechnol.

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“…After treatment with H 2 O 2 (0, 0.4, and 0.8 M), chlorophyll was extracted from transgenic or nontransgenic tomato leaves according to the method of Hu et al (2005). The absorbance of chlorophyll extracts was measured at 663 and 645 nm, and then the chlorophyll content was calculated by the method of Lichtenthaler (1987).…”

Section: Electrolyte Leakage and Chlorophyll Content Analysismentioning

confidence: 99%

CaMsrB2, Pepper Methionine Sulfoxide Reductase B2, Is a Novel Defense Regulator against Oxidative Stress and Pathogen Attack

Baek

Seong

et al. 2010

Plant Physiology

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Reactive oxygen species (ROS) are inevitably generated in aerobic organisms as by-products of normal metabolism or as the result of defense and development. ROS readily oxidize methionine (Met) residues in proteins/peptides to form Met-Rsulfoxide or Met-S-sulfoxide, causing inactivation or malfunction of the proteins. A pepper (Capsicum annuum) methionine sulfoxide reductase B2 gene (CaMsrB2) was isolated, and its roles in plant defense were studied. CaMsrB2 was down-regulated upon inoculation with either incompatible or compatible pathogens. The down-regulation, however, was restored to the original expression levels only in a compatible interaction. Gain-of-function studies using tomato (Solanum lycopersicum) plants transformed with CaMsrB2 resulted in enhanced resistance to Phytophthora capsici and Phytophthora infestans. Inversely, loss-offunction studies of CaMsrB2 using virus-induced gene silencing in pepper plants (cv Early Calwonder-30R) resulted in accelerated cell death from an incompatible bacterial pathogen, Xanthomonas axonopodis pv vesicatoria (Xav) race 1, and enhanced susceptibility to a compatible bacterial pathogen, virulent X. axonopodis pv vesicatoria race 3. Measurement of ROS levels in CaMsrB2-silenced pepper plants revealed that suppression of CaMsrB2 increased the production of ROS, which in turn resulted in the acceleration of cell death via accumulation of ROS. In contrast, the CaMsrB2-transgenic tomato plants showed reduced production of hydrogen peroxide. Taken together, our results suggest that the plant MsrBs have novel functions in active defense against pathogens via the regulation of cell redox status.

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Transgenic tall fescue containing the Agrobacterium tumefaciens ipt gene shows enhanced cold tolerance

Cited by 69 publications

References 15 publications

Enhanced chilling tolerance in Zoysia matrella by pre-treatment with salicylic acid, calcium chloride, hydrogen peroxide or 6-benzylaminopurine

Enhanced chilling tolerance in Zoysia matrella by pre-treatment with salicylic acid, calcium chloride, hydrogen peroxide or 6-benzylaminopurine

Factors influencing callus induction and plant regeneration of Dahurian wildrye grass (Elymus dahuricus L.)

CaMsrB2, Pepper Methionine Sulfoxide Reductase B2, Is a Novel Defense Regulator against Oxidative Stress and Pathogen Attack

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