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Marker-Assisted Selection of Xa21 Conferring Resistance to Bacterial Leaf Blight in indica Rice Cultivar LT2

Rice science 2018年第1期25卷 52-56页

作者： hue thi NGUYEN Quang Hong VU Tan Van MAI Thu thi NGUYEN Lam Duc VU Tung Thanh NGUYEN Long Viet NGUYEN Hien Thu thi VU hue thi nong Trung Nguyen DINH Nakano TOSHITSUGU Liet Van VU Crop Research and Development Institute Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Faculty of Agronomy Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Faculty of Biotechnology Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Faculty of Land Management Vietnam National University of Agriculture Trau Qui Gia Lam Hanoi 10000 Vietnam Japan International Cooperation Agency 16 Phan Chu Trinh Hoan Kiem Hanoi 10000 Vietnam

Bacterial leaf blight of rice (BLB), caused by Xanthomonas oryzae pv. oryzae, is one of the most destructive diseases in Asian rice fields. A high-quality rice variety, LT2, was used as the recipient ***21, which carries the Xa21 gene, was used as the donor parent. The resistance gene Xa21 was introduced into LT2 by marker-assisted backcrossing. Three Xoo races were used to inoculate the improved lines following the clipping method. Eleven BC_3F_3 lines carrying Xa21 were obtained based on molecular markers and agronomic performance. The 11 lines were then inoculated with the three Xoo races. All the 11 improved lines showed better resistance to BLB than the recipient parent LT2. Based on the level of resistance to BLB and their agronomic performance, five lines (BC_3F_3 5.***.5.1, BC_3F_3 5.***.5.12, BC_3F_3 8.***.6.44, BC_3F_3 9.***.4.1 and BC_3F_3 9.***.4.23) were selected as the most promising for commercial release. These improved lines could contribute to rice production in terms of food security.

关键词： rice backcrossing bacterial leaf blight marker-assisted selection

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Hsp90 and reactive oxygen species regulate thermotolerance of rice seedlings via induction of heat shock factor A2 (OsHSFA2) and galactinol synthase 1 (OsGolS1)

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Agricultural Sciences 2013年第3期4卷 154-164页

作者： nong thi hue Huong thi Tran Thuy Phan Junya Nakamura Tomoe Iwata Keisuke Harano Yushi Ishibashi Takashi Yuasa Mari Iwaya-Inoue Department of Bioresource Sciences Faculty of Agriculture Kyushu University Fukuoka Japan. Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan. School of Agriculture Kyushu University Fukuoka Japan.

Heat stress induces expression of a set of thermotolerance-related genes in plants. We focused on rice (Oryza sativa L.) homologs of the gene family that encodes galactinol synthase (OsGolS), which is closely related to the Arabidopsis thaliana galactinol synthase (AtGolS) family whose expression is induced under various stresses. OsGolS1 was highly up-regulated compare to the level of OsGolS2 in re- sponse to heat stress. Interestingly, OsGolS1 was also up-regulated by treatment with the Hsp90 inhibitor, geldanamycin (GDA). Expression profiles of OsGolS1 were correlated to those of OsHsfA2 under the GDA treatments. Treatment with GDA increased expression of OsHsfA2, but marginally increased or did not change OsHsfA1 expression. Notably, gel shift assay indicated that OsHsfA2 binds directly to OsGolS1 promoter region and that OsHsfA1 also binds to the promoter regions of OsHsfA2. Both OsHsfA2 and OsGolS1 were dramatically induced in response to heat stress. Accordingly, galactinol and raffinose contents in rice seedlings increased significantly following the induction of OsGolS1. Pre-treatment of rice seedlings with raffinose or GDA improved their thermotolerance. These results suggest that OsGolS1 plays an important role in response to heat stress, possibly via the transcription cascade of OsHsfA1-OsHsfA2 that leads to galactinol and raffinose accumulation, and that the increased content of these carbohydrates is a key response factor for rice seedlings to enhance thermotolerance.

关键词： Galactinol Synthase Geldanamycin Heat Shock Factor Heat Shock Protein Oryza sativa

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<i>Wrinkled</i>1 (WRI1) Homologs, AP2-Type Transcription Factors Involving Master Regulation of Seed Storage Oil Synthesis in Castor Bean (<i>Ricinus communis</i>L.)

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American Journal of Plant Sciences 2013年第2期4卷 333-339页

作者： Daichi Tajima Ayami Kaneko Masatsugu Sakamoto Yumena Ito nong thi hue Masayuki Miyazaki Yushi Ishibashi Takashi Yuasa Mari Iwaya-Inoue Department of Bioresource Sciences Faculty of Agriculture Kyushu University Fu- kuoka Japan Department of Bioresource Sciences Faculty of Agriculture Kyushu University Fu- kuoka Ja-pan Fukuoka Agricultural Re- search Center Chikushino Japan Graduate School of Bioresource and Bioenvironmental Sciences Kyushu University Fukuoka Japan

Among APETALA2 (AP2)-type plant specific transcription factor family, WRINKLED1 (WRI1), has appeared to be a master gene transcriptionally regulating a set of carbon metabolism- and fatty acid synthesis (FAS)-related genes responsible for seed specific triacylglycerols (TAGs) storage in oil plants. B3 type transcription factors, such as ABI3 and FUS3, are known to be involved in seed development, such as seed storage protein synthesis and maturation. Based on the recent whole genome sequence data of castor bean (Ricinus communis L.), putative WRI1 homologs (RcWRI1, RcWRI2) specifically expressed in castor bean seed have been identified by comparing organ specific expression profiles among seed development-related transcription factors, seed storage specific genes (Ricin, RcOleosin) and a set of FAS genes including genes for sucrose synthase (RcSUS2), biotin carboxyl carrier protein (a subunit of acetyl-CoA carboxylase, RcBCCP2) and ketoacyl-acyl carrier protein synthase (RcKAS1). Immunoreactive signals with WRI1, FUS3 and ABI5-related polypeptides were also detected in seed specifically, consistent with the expression profiles of seed development-related genes. The WRI1 binding consensus sites, [CnTnG](n)(7)[CG], designated as the AW-box, were found at the promoter region of RcBCCP2 and RcKAS1. Thus, RcWRI1 possibly play a pivotal role in seed specific TAGs storage during seed development by directly activating FAS -related genes.

关键词： AP2 Castor Bean Fatty Acid Oil Seed Ricinus communis L. Transcription Factor WRI1

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武夷山地衣杂记(四)

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武夷科学 1986年第1期8卷 285-292页

作者：吴继农项汀钱之广南京师范大学生物系上海自然博物馆

本文继《武夷山地衣杂记》(三)(武夷科学,1985,5:223—229)之后,报道武夷山地衣31种,其中中国新记录2种(标以§记号),大陆新记录4种(标以△记号),福建新记录20种(标以*记号),编写体例同前文。66、条梅衣 Parmelia cirrhata Fr.(Syn.:Eve... 详细信息

本文继《武夷山地衣杂记》(三)(武夷科学,1985,5:223—229)之后,报道武夷山地衣31种,其中中国新记录2种(标以§记号),大陆新记录4种(标以△记号),福建新记录20种(标以*记号),编写体例同前文。66、条梅衣 Parmelia cirrhata Fr.(Syn.:Everniastrum cirrhata(Fr.)

关键词：黑茶渍素武夷山

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