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Accumulation of Polyphenolic Compounds and Osmolytes under Dehydration Stress and Their Implication in Redox Regulation in Four Indigenous aromatic rice Cultivars

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rice science 2020年第4期27卷 329-344页

作者： Nivedita DEY Soumen BHATTACHARJEE Plant Physiology and Biochemistry Research Laboratory/University Grants Commission Centre for Advanced Study Department of BotanyUniversity of BurdwanBurdwan 713104West BengalIndia

Present work was undertaken to screen some drought tolerant indigenous aromatic rice cultivars(IARCs),commonly cultivated in West Bengal,India,based on their capacity to produce osmolytes,redox-sensitive phenolic acids and flavonoids,as contrivances for redox-regulation under drought *** glycol induced post imbibitional dehydration stress mediated changes in redox regulatory properties of the germinating seeds of the four IARCs(Jamainadu,Tulaipanji,Sitabhog,Badshabhog),which were assessed in terms of changes in prooxidant accumulation(in-situ localization of reactive oxygen species(ROS)by confocal microscopy,DCFDA(2′,7′-dichlorofluorescin diacetate)oxidation,O2-and H2O2 accumulation),cumulative antioxidative defense(radical scavenging property and total thiol content),ROS scavenging phenolic acids(gallic acid,protocatechuic acid,gentisic acid,para-hydroxy benzoic acid,chlorogenic acid,caffeic acid,syringic acid,salicylic acid,sinapic acid and p-coumaric acid)and flavonoids(catechin,naringin,rutin,quercetin,kaempferol,myricetin and apigenin).The capability of germinating seeds to accumulate osmolytes(like glycinebetaine,proline,soluble carbohydrates and K+ion)and polyphenolic compounds was also correlated with their corresponding redox status and redox biomarkers(conjugated diene,hydroperoxide,thiobarbituric acid reactive substances and free carbonyl content)produced under the same *** results in general showed that accumulation of osmolytes along with the redox-sensitive phenolics and flavonoids conferred the ability to maintain the redox homeostasis under drought stress for the tolerant IARCs(Badshabhog and Tulaipanji).

关键词： aromatic rice drought polyphenolic compounds osmolytes redox regulation

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Effects of High-Quality aromatic rice Varieties on the Fitness of the Striped Stem Borer, Chilo suppressalis (Walker) in Central China

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Journal of Integrative Agriculture 2013年第7期12卷 1208-1214页

作者： DU Xue-zhu WANG Yong CHEN Long-jia PENG Chuan-hua MA Wei-hua LEI Chao-liang College of Life Science Hubei University Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory Huazhong Agricultural University Hubei Plant Protection Station

The striped stem borer （SSB）, Chilo suppressalis （Walker）（Lepidoptera： Pyralidae）, is a major pest of rice in China. Variation in host-plant quality may affect the body size of herbivorous insects, which in turn, can determine their life-history parameters such as survival, fecundity and fitness. In this study, we tested the effects of high-quality aromatic rice varieties on the fitness of SSB in China. Results showed that 1st instar larvae had higher penetrating rates and survival rates on the high-quality aromatic rice varieties （EX-1 and WX-988） than that on the non-aromatic rice varieties （EZ-5 and LYP-9）. In addition, shorter developmental periods, greater female pupal weights and higher of other life-history parameters （hatching rate, pupation rate, eclosion rate and increase index） were found on the high-quality aromatic rice varieties, although only female pupal weight showed a significant difference between the two varieties. The highest dead heart rate was found on the aromatic rice variety of EX-1. These results indicate that SSB sustains a lower fitness cost when consuming the high-quality aromatic rice varieties （EX-1 and WX-988） than on the non-aromatic rice varieties （EZ-5 and LYP-9） in Central China.

关键词： aromatic rice Chilo suppressalis fitness

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Development of new aromatic rice lines with high eating and cooking qualities

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Journal of Integrative Agriculture 2023年第3期22卷 679-690页

作者： Kanokwan KAEWMUNGKUN Keasinee TONGMARK Sriprapai CHAKHONKAEN Numphet SANGARWUT Thiwawan WASINANON Natjaree PANYAWUT Khanittha DITTHAB Kannika SIKAEWTUNG QI Yong-bin Sukanya DAPHA Atikorn PANYA Natthaporn PHONSATTA Amorntip MUANGPROM National Center for Genetic Engineering and Biotechnology Thailand Science ParkPathum Thani 12120Thailand Department of Biotechnology Faculty of Science and TechnologyThammasat UniversityPathum Thani 12120Thailand Institute of Crop Science and Nuclear Technology Utilization Zhejiang Academy of Agricultural SciencesHangzhou 310021P.R.China Khlong Luang rice Research Center Rice DepartmentPathum Thani 12120Thailand

rice is the staple food for about half of the world’s *** by consumers,aromatic rice is a special type of rice with great commercial *** and eating qualities and aroma are the major grain qualities favored by most ***,most of the available aromatic varieties have low yields and some undesirable agronomic ***,there is an urgent need to develop better aromatic rice *** work aims to identify rice germplasm lines that have good grain quality and to develop new varieties with desirable ***-six out of 188 germplasm lines were found to have betaine aldehyde dehydrogenase 2 (badh2) controlling the aroma and were analyzed for their 2-acetyl-1-pyrroline (2AP) ***,17 of those lines were found to have alleles for low amylose content and low gelatinization temperature,controlled by waxy and starch synthase Ⅱa (SSⅡa),respectively,suggesting that they are aromatic rice lines with high cooking and eating qualities.A total of 158 F_(7)recombinant inbred lines (RILs) generated from five crosses of the selected germplasm lines were planted for phenotypic and yield observations,resulting in 27 F_(8)RILs selected for yield evaluation and ***,four out of the seven F_(9)aromatic RILs showed high yield,high 2AP production,and low amylose content,in agreement with their *** other three F9RILs were aromatic rice lines with high amylose content and high *** consumer preferences for grain quality vary depending on regions and ethnic groups,the high-yielding aromatic RILs generated from this study can be used to increase the yield of Thai rice and to raise market value and farm profits.

关键词： germplasm functional marker aromatic rice badh2 waxy SSIIa RILs

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Enriching Iodine and Regulating Grain Aroma,Appearance Quality,and Yield in aromatic rice by Foliar Application of Sodium Iodide

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rice science 2024年第3期31卷 328-342,I0046-I0054页

作者： HONG Weiyuan DUAN Meiyang WANG Yifei CHEN Yongjian MO Zhaowen QI Jianying PAN Shenggang TANG Xiangru State Key Laboratory for Conservation and Utilization of Subtropical Agricultural Bioresources South China Agricultural UniversityGuangzhou 510642China Scientific Observing and Experimental Station of Crop Cultivation in South China Ministry of Agriculture and Rural AffairGuangzhou 510642China Guangzhou Key Laboratory for Science and Technology of aromatic rice Guangzhou 510642China

Applying iodine fertilizers to cultivate iodine-rich crops for daily intake is an effective approach for iodine supplementation,especially for aromatic *** experiments were conducted during the early growing seasons of 2021 and 2022 to evaluate the impacts of foliar application of iodine fertilizer on aromatic rice and to explore the optimal iodine fertilizer *** the full heading stage,six different concentrations of sodium iodide solutions of 0%(CK),0.010%(T1),0.025%(T2),0.050%(T3),0.075%(T4),and 0.100%(T5)were applied to indica aromatic rice cultivars Meixiangzhan 2 and *** results showed that sodium iodide treatments significantly increased the iodine and sodium contents in both leaves and *** with the CK,the T1 and T2 treatments increased the 2-acetyl-1-pyrroline(2-AP)content in mature grains by 8.41%-101.66%and 13.58%-74.60%,*** in the contents of 1-pyrroline-5-carboxylic acid,proline,1-pyrroline,and methylglyoxal,as well as the activity of proline dehydrogenase were also ***,sodium iodide treatments remarkably decreased the chalky grain rate,chalkiness area,and chalkiness degree of aromatic rice,with the T2 treatment exhibiting a 17.79%-47.42%decrease in chalkiness degree compared with the ***,T1 and T2 treatments showed beneficial impacts on chlorophyll content,photosynthetic characteristics,and yield components,while T3,T4,and T5 treatments exhibited adverse effects on leaf and grain *** linear discriminant analysis revealed significant differences between *** correlation analysis and piecewise structural equation modeling showed that the iodine and sodium influenced the photosynthetic characteristics and chlorophyll content of the leaves,thereby regulating the 2-AP biosynthesis and yield components,ultimately affecting the 2-AP content and ***,this study suggests that foliar application of 0.025%sodium iodide is an effective method t

关键词： 2-acetyl-1-pyrroline appearance quality aromatic rice foliar application grain yield iodine

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Effects of Exogenousα-Ketoglutaric Acid on 2-Acetyl-1-Pyrroline,Yield Formation and Grain Quality Characters of aromatic rice

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 437-447页

作者： Bin Du Qixia Wu Shuochen Jiang Dingyue Zhang Yue Qiao Yimei Xie Jianlong Xu Jianqiang Zhu College of Agriculture Yangtze UniversityJingzhou434023China National Selenium-Rich Product Quality Supervision and Inspection Center Enshi434023China Institute of Crop Science Chinese Academy of Agricultural SciencesBeijing100081China

The improvement of grain quality in aromatic rice is very important for farmer to increase their *** study was conducted with a two-year field experiment and three aromatic rice cultivars in order to study the effects of exogenousα-ketoglutaric acid on yield formation,grain quality characters and the biosynthesis of 2-acetyl-1-pyrroline(2-AP,key component of aromatic rice’s fragrance)in aromatic *** heading stage,0.50 mmol L^(-1)(T1)and 1.00 mmol L^(-1)(T2)α-ketoglutaric acid solutions were overhead sprinkle to aromatic rice plants,respectively while the treatment which was overhead sprinkled with distilled water was set as control(CK).The results showed that 17.34%-33.04%and 21.39%-34.74%higher grain 2-AP contents were recorded in T1 and T2 treatments,*** with CK,T1 and T2 treatments significantly reduced the transcript level of gene BADH2 which is related to the 2-AP biosynthesis in aromatic rice.3.86%-7.51%higher grain protein contents and 1.15%-3.37%higher head rice rates were also recorded inα-ketoglutaric acid treatments than ***,T1 and T2 treatments remarkably decreased the chalky rice rate,chalkiness and grain amylose ***,there was no remarkable difference in grain yield and related trails(effective panicle number,grain number per panicle,seed-setting rate and 1000-grain weight)among CK,T1 and T2 *** conclusion,application of exogenousα-ketoglutaric acid enhanced 2-AP biosynthesis and improved grain quality of aromatic rice.

关键词： α-ketoglutaric acid aromatic rice chalkiness protein 2-acetyl-1-pyrroline

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Germplasm Resources,Genes and Perspective for aromatic rice

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rice science 2023年第4期30卷 294-305页

作者： Prafulla Kumar BEHERA Debabrata PANDA Department of Biodiversity and Conservation of Natural Resources Central University of OdishaKoraput 764003OdishaIndia

aromatic rice is considered an important commodity in the global market because of its strong aroma and eating and cooking *** countries,such as India and Pakistan,are the leading traders of Basmati rice,whereas Thailand is the major supplier of Jasmine rice in the international *** strong aroma of rice is associated with more than 300 volatile compounds,among which 2-acetyl-1-pyrroline(2-AP)is the principal component.2-AP is a phenotypic expression of spontaneous mutations in the recessive gene OsBadh2 or *** present review focuses on the origin,evolution and diversity of genetic resources of aromatic rice available worldwide.A brief discussion is presented on the genes responsible for quality traits along with details of their molecular *** compilation and discussion will be useful for future breeding programs and the biofortification of quality traits of aromatic rice to ensure food security and nutritional need.

关键词： aromatic rice 2-acetyl-1-pyrroline polyamine degradation pathway quality trait

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Utilization of aromatic rice in improving grain quality of hybrid rice(Ⅱ)

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Hunan Agricultural Science ＆ Technology Newsletter 2003年第1期4卷 2-7页

作者： Zhou Kunlu, and Liao FumingHunan Academy of Agricultural Sciences, Changsha 410125, China Hunan Academy of Agricultural Sciences Changsha 410125 China

Xiangxiang 2A has an evident drawback, i.e., instability in male sterility under higher temperature conditions resulting from the existence of minor restoring genes in it, which greatly hampered the extension of its elite hybrid Xiangyou 63 with both high yield and fine quality in commercial production. To improve Xiangxiang 2A, the hybridization of Xiangxiang 2B with V20 B was made again in 1990. A new aromatic CMS line Xinxiang A was successfully developed in 1994. It not only retains the favorable characteristics of Xiangxiang 2A in grain quality and combining ability, but also expresses complete and stable male sterility and high seed production yield potential. Up to now, by using it as female parent, a series of quasi aromatic hybrids have been developed. Some of them have been released to farmers. Because such hybrids can not only yield higher or as high as but also possess a better grain quality than the current common high yielding hybrid rice varieties,so that they are preferred and well welcome by the farmers in China. The planting area under these hybrids is increasing rapidly in China.

关键词： aromatic rice grain quality,aroma,inheritance of aroma,aromatic CMS lines,hybrid rice breeding

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Utilization of aromatic rice in Improving Grain Quality of Hybrid rice(Ⅰ)

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Hunan Agricultural Science ＆ Technology Newsletter 2002年第4期3卷 4-10页

作者： Zhou Kunlu, and Liao Fuming Hunan Academy of Agricultural Sciences, Changsha 410125, China Hunan Academy of Agricultural Sciences Changsha 410125 China

To improve grain quality of the high-yielding hybrid rice in China, we introduced the aromatic rice MR365, an improved Indian cultivar, from IRRI in 1984 and began to transfer its aroma and good quality characters into the existing maintainer lines. In the meantime, the research on the inheritance of aroma for increasing the breeding efficiency was also *** was found that the inheritance of aroma in MR 365 and its derivatives was controlled by one pair of recessive major genes based on the KOH-soaking method. There existed disparity in aroma degree among different grains of F2 generation, and different aromatic CMS lines derived from the same aromatic donor had also a little difference in the degree of aroma, which implies that, besides the major genes, aroma may also be affected by the genetic backgrounds or minor *** 2A, developed from the cross of V20A//V20B/MR365, is the first aromatic CMS line bred in China. It is not only aromatic but also has good grain quality and combining ability. Using it as female parent, Xiangyou 63 (Xiangxiang 2A / Minghui 63), the first quasi-aromatic hybrid rice combination in China, was developed, and released to farmers in 1995. Xiangyou 63 is characteristic of quasi-aromatic or partially aromatic (because only a portion of or not all grains are aromatic), good grain quality, high-yielding ability, good blast resistance and wide adaptability.

关键词： aromatic rice grain quality aroma hybrid rice breeding

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Sensory Phenotypic and Molecular Identification of aromatic rice Accessions Cultivated in Benin

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Advances in Bioscience and Biotechnology 2024年第3期15卷 195-206页

作者： Chimène Nadège Mahoussi Nanoukon Koffi David Montcho Hambada Deless Edmond Fulgence Thiémélé Bignon Meyrix Pamela Franzel Loumedjinon Babatoundé Franel Carel Wenceslas Affolabi Amed Sèmèvo Havivi Kéllya Laurinzo Déguénon Grâce Finagnon Vitoekpon Arielle Bankole Lambert Gustave Djedatin Laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Bio-technologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin Laboratory of Molecular Biology and Bioinformatics Applied to Genomics National School of Applied Biosciences and Biotechnologies National University of Science Technology Engineering and Mathematics Dassa-Zoumè Benin Laboratory of Plant Horticultural and Forestry Sciences National University of Agriculture Kétou Benin Genetics Teaching and Research Unit Department of Biochemistry-Genetics Peleforo GON COULIBALY University Korhogo C&#244te d’Ivoire

rice is one of the most widely cultivated cereals in the world, and its aroma is increasingly in demand. With the advancement of research, a major rice flavor gene has been identified on rice chromosome 8. It encodes non-functional betaine aldehyde dehydrogenase leading to the accumulation of 2-acetyl-1-pyrroline which is the major olfactory compound that confers the fragrant character to rice. The aroma of rice is considered a special trait of enormous economic importance that determines the prime price in world trade. To satisfy the needs of the population and reduce rice imports into Benin, we conducted this study to identify aromatic rice accessions grown in Benin. Seventy-two rice accessions collected across Benin were PCR amplified with three SSR markers RM 7049, Aro 7, and RM 223, linked to the fgr (fragrance of rice) aroma gene. Molecular analysis revealed that 12 of the 72 accessions, namely Bagou 19, Bagou 22, Tchaka 34, Foun 15, Tchaka 41, Nana 32, Kan 61, Kung 69, Kung 67, Bagou 20, Agbab 101 and Koum 55 possess the fgr gene and can be considered as aromatic rice accessions. A sensory phenotypic test using KOH was carried out on rice accessions carrying fgr gene. Of the twelve positives, only one had the smell of aromatic rice, like the Azucena control. These results show that Benin also has aromatic rice varieties that can be sold on national and international markets.

关键词： aromatic rice 2-Acetyl-1-Pyrroline SSR Markers Benin

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Comparison of Genetic Diversity Between Local Cultivated aromatic and Non-aromatic rice in Yunnan Province

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Agricultural Science & Technology 2009年第1期10卷 56-59页

作者：白现广程在全蔺忠龙吕广磊黄兴奇云南大学生命科学学院云南昆明650091 云南省农业科学院生物技术与种质资源研究所云南昆明650223 云南农业大学农业与生物技术学院云南昆明650201

[ Objective] The genetic diversity of the local cultivated aromatic rice and non-aromatic rice in Yunnan Province were compared to provide further genetic resources for breeding practice. [Method] Genetic diversity of 10 aromatic rice and 45 non-aromatic rice were analyzed by 64 SSR primers covered on 12 rice chromosomes. [ Result] Per locus 5.44 and 7.98 alleles in average were detected, ranging from 2 to 12 and from 2 to 17 in aromatic and non-aromatic rice, respectively. Average genetic multiplicity index（Hs） was 0.46 and 0.67 respectively. The average polymorphism information content （PIC） was 0.43 and 0.58 in aromatic and non-aromatic rice respectively. [ Conclusion] The results indicated that genetic diversity was higher in non-aromatic rice than in aromatic rice.

关键词： aromatic rice Local cultivated rice SSR markers Cluster analysis Genetic diversity

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