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Mai NTP, Nguyen LTT, Tran SG, To HTM. Genome-wide association study reveals useful QTL and genes controlling the fatty acid composition in rice bran oil using Vietnamese rice landraces. Funct Integr Genomics 2023; 23:150. [PMID: 37156920 DOI: 10.1007/s10142-023-01080-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
In rice (Oryza sativa L.), rice bran contains valuable nutritional constituents, such as high unsaturated fat content, tocotrienols, inositol, γ-oryzanol, and phytosterols, all of which are of nutritional and pharmaceuticals interest. There is now a rising market demand for rice bran oil, which makes research into their content and fatty acid profile an area of interest. As it is evident that lipid content has a substantial impact on the eating, cooking, and storage quality of rice, an understanding of the genetic mechanisms that determine oil content in rice is of great importance, equal to that of rice quality. Therefore, in this study, we performed a genome-wide association study on the composition and oil concentration of 161 Vietnamese rice varieties. Five categories of fatty acids in rice bran were discovered and the bran oil concentration profile in different rice accessions was identified. We also identified 229 important markers related to the fatty acid composition of bran oil, distributed mainly on chromosomes 1 and 7. Seven quantitative trait loci and five potential genes related to unsaturated fatty acid content were detected, including OsKASI, OsFAD, OsARF, OsGAPDH, and OsMADS29. These results provide insights into the genetic basis of rice bran oil composition, which is pivotal to the metabolic engineering of rice plants with desirable bran oil content through candidate genes selection.
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Affiliation(s)
- Nga T P Mai
- University of Sciences and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, 10000, Ha Noi City, Vietnam
| | - Linh Thi Thuy Nguyen
- University of Sciences and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, 10000, Ha Noi City, Vietnam
| | - Son Giang Tran
- University of Sciences and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, 10000, Ha Noi City, Vietnam
| | - Huong Thi Mai To
- University of Sciences and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, 10000, Ha Noi City, Vietnam.
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Molecular evolution and expression analysis of ADP-ribosylation factors (ARFs) from longan embryogenic callus. Gene 2021; 777:145461. [PMID: 33515723 DOI: 10.1016/j.gene.2021.145461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 01/11/2021] [Accepted: 01/20/2021] [Indexed: 11/21/2022]
Abstract
ADP-ribosylation modification considered as a model to study histone post-translational modification in chromatin modification. Despite it was reported in many plants, the study of ARFs gene family in longan was still unclear. In this study, 14 longan ARFs genes were identified using the longan genome (the third-generation genome) and further divided into two major groups, including the DlARF in the I-II group and the ARF-like (DlARL) in the III-V group, according to their structure and evolutionary characteristics. Whole-genome duplication (WGD) and segmental duplication events played a major role in the expansion of the DlARFs gene family, the synteny and phylogenetic analyses provided a deeper insight into the evolutionary characteristics of the DlARFs. Protein-protein interactions suggested that some DlARFs proteins may interact to participate in biological processes. Promoter analysis showed more stress response elements in DlARF5, DlGB1, DlARL1, DlARL2, and DlARL8a, suggesting that they may participate in abiotic stress. Expression profiles of DlARFs by quantitative real-time PCR (qRT-PCR) showed that they were abundant accumulation during early somatic embryogenesis (SE). Expression pattern analysis of RNA-seq and qRT-PCR revealed that some ARFs members regulated early SE, and respond to exogenous hormones and abiotic stress such as abscisic acid (ABA), gibberellin A3 (GA3), salicylic acid (SA), methyl jasmonate (MeJA), cold, and heat. Our study provides new insights for further research on the potential function of DlARFs, which may be useful for the improvement of longan.
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Gupta UC, Gupta SC. The Important Role of Potatoes, An Underrated Vegetable Food Crop in Human Health and Nutrition. CURRENT NUTRITION & FOOD SCIENCE 2019. [DOI: 10.2174/1573401314666180906113417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Despite frequently being described as a carbohydrate-laden, calorie-rich unimportant part of
the human diet, potatoes (Solanum tuberosum L.) are one of the most nutritive vegetable food crops in
the world and, in comparison to most other vegetables are richer in essential human nutrients. These
include proteins, starch and fibre, major, secondary and trace minerals, vitamins, antioxidants and
phytochemicals. Potatoes have an abundance of vitamin C and the mineral potassium (K) which are
vital for health. Potassium reduces the risk of Blood Pressure (BP), cardiovascular diseases (CVDs),
osteoporosis and strokes. Vitamin C helps reduce strokes and hypertension and prevents scurvy. The
predominant form of carbohydrate (CHO) in the potato is starch. A small but significant part of this
starch is resistant to digestion by enzymes in the stomach and small intestine, so it reaches the large
intestine essentially intact. This resistant starch is considered to have similar physiological effects and
health benefits as fibre. A medium size potato (148 g) contains 4 g protein and very small amount of
fat or cholesterol. The fibre content of a potato with skin is equivalent to that of many whole grain
breads and pastas. Potatoes contain rather large amount of the enzyme catalase, which converts hydrogen
peroxide into oxygen and water and thus prevents cell injury. Potatoes contain phytochemicals
such as lutein and zeaxanthin; which protect and preserve eyesight and may help reduce the risk of
macular degeneration. It is not the high Glycemic Index (GI) in potatoes or in any other food, but the
number of calories consumed from all foods that causes weight gain. Overall, potatoes are an underrated
source of essential human nutrients.
</P><P>
Potatoes also contain toxic compounds, such as α-solanine and α-chaconine which are known to induce
toxicity. These poisons cause gastrointestinal disturbances causing vomiting and diarrhea but severe
poisoning may lead to paralysis, cardiac failure and comma. Green areas in potatoes containing
chlorophyll are harmless but indicate that toxins may be present. According to the American Cancer
Society, food born toxin such as acrylamide is formed when starchy foods such as potatoes and potato
products are cooked at temperatures above 121C. However, deep frying at 170C is known to effectively
lower the level of toxic compounds, while microwaving is only somewhat effective and freezedrying
or dehydration has little effect. The highest levels of acrylamide are found in CHO-rich foods,
such as potato chips and French fries, which had been cooked at high temperatures.
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Affiliation(s)
- Umesh C. Gupta
- Agriculture and Agri-Food Canada, Charlottetown Research and Development Centre, 440 University Avenue, Charlottetown, PE, C1A 4N6, Canada
| | - Subhas C. Gupta
- The Department of Plastic Surgery, Loma Linda University School of Medicine, Loma Linda, California 92354, United States
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Muthamilarasan M, Mangu VR, Zandkarimi H, Prasad M, Baisakh N. Structure, organization and evolution of ADP-ribosylation factors in rice and foxtail millet, and their expression in rice. Sci Rep 2016; 6:24008. [PMID: 27097755 PMCID: PMC4838888 DOI: 10.1038/srep24008] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 03/18/2016] [Indexed: 11/09/2022] Open
Abstract
ADP-ribosylation factors (ARFs) have been reported to function in diverse physiological and molecular activities. Recent evidences also demonstrate the involvement of ARFs in conferring tolerance to biotic and abiotic stresses in plant species. In the present study, 23 and 25 ARF proteins were identified in C3 model- rice and C4 model- foxtail millet, respectively. These proteins are classified into four classes (I-IV) based on phylogenetic analysis, with ARFs in classes I-III and ARF-like proteins (ARLs) in class IV. Sequence alignment and domain analysis revealed the presence of conserved and additional motifs, which may contribute to neo- and sub-functionalization of these proteins. Promoter analysis showed the presence of several cis-regulatory elements related to stress and hormone response, indicating their role in stress regulatory network. Expression analysis of rice ARFs and ARLs in different tissues, stresses and abscisic acid treatment highlighted temporal and spatial diversification of gene expression. Five rice cultivars screened for allelic variations in OsARF genes showed the presence of allelic polymorphisms in few gene loci. Altogether, the study provides insights on characteristics of ARF/ARL genes in rice and foxtail millet, which could be deployed for further functional analysis to extrapolate their precise roles in abiotic stress responses.
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Affiliation(s)
- Mehanathan Muthamilarasan
- School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Venkata R. Mangu
- School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
| | - Hana Zandkarimi
- School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
| | - Manoj Prasad
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Niranjan Baisakh
- School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
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Wang Q, Xue X, Li Y, Dong Y, Zhang L, Zhou Q, Deng F, Ma Z, Qiao D, Hu C, Ren Y. A maize ADP-ribosylation factor ZmArf2 increases organ and seed size by promoting cell expansion in Arabidopsis. PHYSIOLOGIA PLANTARUM 2016; 156:97-107. [PMID: 26096810 DOI: 10.1111/ppl.12359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 05/24/2015] [Accepted: 05/27/2015] [Indexed: 06/04/2023]
Abstract
ADP-ribosylation factors (ARFs) are small GTP-binding proteins that regulate a wide variety of cell functions. Previously, we isolated a new ARF, ZmArf2, from maize (Zea mays). Sequence and expression characteristics indicated that ZmArf2 might play a critical role in the early stages of endosperm development. In this study, we investigated ZmArf2 function by analysis of its GTP-binding activity and subcellular localization. We also over-expressed ZmArf2 in Arabidopsis and measured organ and cell size and counted cell numbers. The expression levels of five organ size-associated genes were also determined in 35S::ZmArf2 transgenic and wild-type plants. Results showed that the recombinant ZmArf2 protein purified from Escherichia coli exhibited GTP-binding activity. Subcellular localization revealed that ZmArf2 was localized in the cytoplasm and plasma membrane. ZmArf2 over-expression in Arabidopsis showed that 35S::ZmArf2 transgenic plants were taller and had larger leaves and seeds compared to wild-type plants, which resulted from cell expansions, not an increase in cell numbers. In addition, three cell expansion-related genes, AtEXP3, AtEXP5 and AtEXP10, were upregulated in 35S::ZmArf2 transgenic lines, while the expression levels of AtGIF1 and AtGRF5, were unchanged. Collectively, our studies suggest that ZmArf2 has an active GTP-binding function, and plays a crucial role in growth and development in Arabidopsis through cell expansion mediated by cell expansion genes.
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Affiliation(s)
- Qilei Wang
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Xiaojing Xue
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Yuling Li
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Yongbin Dong
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Long Zhang
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Qiang Zhou
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Fei Deng
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Zhiyan Ma
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Dahe Qiao
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Chunhui Hu
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
| | - Yangliu Ren
- College of Agriculture, Henan Agricultural University, Collaborative Innovation Center of Henan Grain Crops, National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou, China
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Karan R, Subudhi PK. Overexpression of an adenosine diphosphate-ribosylation factor gene from the halophytic grass Spartina alterniflora confers salinity and drought tolerance in transgenic Arabidopsis. PLANT CELL REPORTS 2014; 33:373-84. [PMID: 24247851 DOI: 10.1007/s00299-013-1537-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 10/21/2013] [Accepted: 11/02/2013] [Indexed: 05/11/2023]
Abstract
Adenosine diphosphate-ribosylation factors (ARFs) are small guanine nucleotide-binding proteins that play an important role in intracellular protein trafficking necessary for undertaking multiple physiological functions in plant growth and developmental processes. However, little is known about the mechanism of ARF functioning at the molecular level, as well as its involvement in abiotic stress tolerance. In this study, we demonstrated the direct involvement of an ARF gene SaARF from a grass halophyte Spartina alterniflora in abiotic stress adaptation for the first time. SaARF, which encodes a protein with predicted molecular mass of 21 kDa, revealed highest identity with ARF of Oryza sativa. The SaARF gene is transcriptionally regulated by salt, drought, cold, and ABA in the leaves and roots of S. alterniflora. Arabidopsis plants overexpressing SaARF showed improved seed germination and survival of seedlings under salinity stress. Similarly, SaARF transgenic Arabidopsis plants were more tolerant to drought stress, compared to wild-type plants, by maintaining chlorophyll synthesis, increasing osmolyte synthesis, and stabilizing membrane integrity. Oxidative damage due to moisture stress in transgenic Arabidopsis was also reduced possibly by activating antioxidant genes, AtSOD1 and AtCAT. Our results suggest that enhanced drought and salinity tolerance conferred by the SaARF gene may be due to its role in mediating multiple abiotic stress tolerance mechanisms.
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Affiliation(s)
- Ratna Karan
- Agronomy Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, 32611, USA
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7
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Identification of differentially expressed genes in potato associated with tuber dormancy release. Mol Biol Rep 2012; 39:11277-87. [DOI: 10.1007/s11033-012-2037-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Accepted: 10/02/2012] [Indexed: 01/14/2023]
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8
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Abdalla KO, Rafudeen MS. Analysis of the nuclear proteome of the resurrection plant Xerophyta viscosa in response to dehydration stress using iTRAQ with 2DLC and tandem mass spectrometry. J Proteomics 2012; 75:2361-74. [DOI: 10.1016/j.jprot.2012.02.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 01/31/2012] [Accepted: 02/04/2012] [Indexed: 10/28/2022]
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9
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Abstract
Potato breeding programmes worldwide are undergoing a period of rapid change. In order to be successful, breeders must adapt and incorporate the newest up-to-date techniques as they become available. Recent advances in biotechnology make it possible to develop and cultivate more and more sophisticated transgenic crops with multiple modified traits. Gene transfer methods can be used for a wide range of fundamental studies, contributing to a better understanding of the mechanisms of plant/pathogen interactions and the metabolic pathways in plants. Transgenic potato plants are being generated worldwide to investigate the impact of transgene expression on parameters as complex as yield. Historically, potato was one of the first successfully transformed crop plants. Nowadays, transgenic potatoes have been introduced into the food chain of people and animals in several countries. Some of the genetic modifications give potato plants increased resistance to biotic and abiotic environmental factors, while others lead to improved nutritional value, or cause the plants to produce proteins of the immune system of humans or animals or substances that may be used as vaccines in humans or veterinary medicine. The trend today is towards the generation of crops with output traits, e.g. modified starch or carotenoids, or the production of pharmaceuticals in tubers, whereas the early targets were input traits, e.g. herbicide resistance, pest or virus resistance. This review provides a summary of examples illustrating the versatility and applicability of transgenic biology in potato improvement.
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Affiliation(s)
| | - Z. Polgar
- 1 University of Pannonia Potato Research Centre, Centre of Agricultural Sciences Keszthely Hungary
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10
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Trinchella F, Cannetiello M, Simoniello P, Filosa S, Scudiero R. Differential gene expression profiles in embryos of the lizard Podarcis sicula under in ovo exposure to cadmium. Comp Biochem Physiol C Toxicol Pharmacol 2010; 151:33-9. [PMID: 19695345 DOI: 10.1016/j.cbpc.2009.08.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Revised: 08/07/2009] [Accepted: 08/10/2009] [Indexed: 12/19/2022]
Abstract
Screening for differentially expressed genes is a straightforward approach to study the molecular basis of contaminant toxicity. In this paper, the mRNA differential display technique was applied to analyze transcriptional regulation in response to cadmium exposure in the lizard embryos. Lizard eggs may be particularly susceptible to soil contamination and in ovo exposure may interfere or disrupt normal physiological function in the developing embryo, including regulation of gene expression. Fertilized eggs of the lizard Podarcis sicula were incubated in cadmium-contaminated soil at 25 degrees C for 20 days. Gene expression profiling showed 5 down- and 9 up-regulated genes. Four cDNAs had no homology to known gene sequences, thus suggesting that may either encode not yet identified proteins, or correspond to untranslated regions of mRNA molecules. Four fragments exhibited significant sequence similarity with genes encoding novel proteins or ESTs derived from other vertebrates. The remaining genes are mainly involved in molecular pathways associated with processes such as membrane trafficking, signal transduction, cytoskeletal organization, cell proliferation and differentiation. Cadmium also affected the expression of factors actively involved in the regulation of the transcription machinery. Down-regulated genes are mainly associated with cellular metabolism and cell-cycle regulation and apoptosis. All of these differentially expressed genes may represent candidates that function in cadmium responses. The present study leads to an increased understanding of genes and/or the biochemical pathways involved in perturbation of embryo development following cadmium exposure.
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Affiliation(s)
- Francesca Trinchella
- Department of Biological Sciences, University Federico II, Via Mezzocannone 8, Naples, Italy
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11
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Yao Y, Ni Z, Du J, Han Z, Chen Y, Zhang Q, Sun Q. Ectopic overexpression of wheat adenosine diphosphate-ribosylation factor, TaARF, increases growth rate in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2009; 51:35-44. [PMID: 19166492 DOI: 10.1111/j.1744-7909.2008.00792.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Differential gene expression between hybrids and their parents is considered to be associated with heterosis. However, the physiological functions and possible contribution to heterosis of these differentially expressed genes are unknown. We have isolated one hybrid upregulated gene encoding putative wheat ADP-ribosylation factor, designated TaARF. In this study, real-time quantitative reverse transcription-polymerase chain reaction analysis indicated that the TaARF transcript was preferentially expressed in root, node and crown, and the accumulation of TaARF mRNA in hybrid was more than 1.5-fold higher than that in two parents. In order to understand possible roles of the putative wheat ARF gene, TaARF was overexpressed in Arabidopsis, and the transgenic plants were characterized. We show that ectopic overexpression of TaARF in Arabidopsis leads to increased leaf area, increased growth rate and earlier transition to flowering, suggesting that TaARF plays significant roles in growth and development. This study provides evidence demonstrating that TaARF plays important roles in growth and development and we speculate that the upregulated expression of this gene might contribute to the heterosis observed in wheat root and leaf growth.
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Affiliation(s)
- Yingyin Yao
- Department of Plant Genetics & Breeding and State Key Laboratory for Agrobiotechnology, Key Laboratory of Crop Heterosis and Utilization, Ministry of Education, China Agricultural University, Beijing, China
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12
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Liu X, Zhang M, Duan J, Wu K. Gene expression analysis of germinating rice seeds responding to high hydrostatic pressure. JOURNAL OF PLANT PHYSIOLOGY 2008; 165:1855-1864. [PMID: 18639954 DOI: 10.1016/j.jplph.2008.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 05/19/2008] [Accepted: 05/19/2008] [Indexed: 05/25/2023]
Abstract
High hydrostatic pressure (HHP) is an extreme thermal-physical stress affecting multiple cellular activities. Recently, we found that HHP treatment caused various physiological changes in rice. To investigate the molecular mechanisms of plant response to HHP, we constructed forward and reverse subtracted cDNA libraries of rice seeds treated with 75MPa hydrostatic pressure for 12h by suppression subtractive hybridization in combination with mirror orientation selection. Of 97 clones isolated through microarray dot-blot and sequenced, 45 were unique genes. Among these 45 unique cDNAs, 29 clones showed significant sequence similarity to known genes, 12 were homologous to genes with unknown function, and the remaining 4 clones did not match any known sequences. Most of the genes with known function were involved in metabolism, defense response, transcriptional regulation, transportation regulation, and signal transduction. To our knowledge, this is the first gene expression analysis of rice in response to HHP. The expression profiles of the genes identified in this study provide useful information regarding molecular processes, including alteration of metabolism and adaptation response caused by HHP.
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Affiliation(s)
- Xuncheng Liu
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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Oehrle NW, Sarma AD, Waters JK, Emerich DW. Proteomic analysis of soybean nodule cytosol. PHYTOCHEMISTRY 2008; 69:2426-38. [PMID: 18757068 DOI: 10.1016/j.phytochem.2008.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2008] [Revised: 06/24/2008] [Accepted: 07/18/2008] [Indexed: 05/13/2023]
Abstract
An isolation procedure for soybean (Glycine max L. cv Williams 82) nodule cytosol proteins was developed which greatly improved protein resolution by two-dimensional polyacrylamide gel electrophoresis. The most abundant proteins were selected and analyzed by mass spectrometry. The identified proteins were categorized by function (% of total proteins analyzed): carbon metabolism (28%), nitrogen metabolism (12%), reactive oxygen metabolism (12%) and vesicular trafficking (11%). The first three categories were expected based on the known physiological functions of the symbiotic nitrogen fixation process. The number of proteins involved in vesicular trafficking suggests a very active exchange of macromolecules and membrane components. Among the 69 identified proteins were the enzymes of the three carbon portion of glycolysis, which were further characterized to support their roles in the sucrose synthase pathway to provide malate for the bacteroids. Proteomic analysis provides a functional tool by which to understand and further investigate nodule function.
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Affiliation(s)
- Nathan W Oehrle
- United States Department of Agriculture, Curtis Hall, University of Missouri, Columbia, MO 65211, United States
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Elmayan T, Fromentin J, Riondet C, Alcaraz G, Blein JP, Simon-Plas F. Regulation of reactive oxygen species production by a 14-3-3 protein in elicited tobacco cells. PLANT, CELL & ENVIRONMENT 2007; 30:722-32. [PMID: 17470148 DOI: 10.1111/j.1365-3040.2007.01660.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The regulation of the system responsible for the production of reactive oxygen species (ROS) during plant-micro-organism interaction is still largely unknown. The protein NtrbohD has been recently demonstrated as the plasma membrane oxidase responsible for ROS production in elicited tobacco cells. Here, its C-terminus part was used as a bait in a two-hybrid screen in order to identify putative regulators of this system. This led to the isolation of a cDNA coding for a member of the 14-3-3 protein family. The corresponding transcript was induced after infiltration of tobacco leaves with the fungal elicitor cryptogein. Tobacco cells transformed with an antisense construct of this 14-3-3 no longer accumulated ROS, which constitutes a functional validation of the two-hybrid screen. This work provides new insights to the understanding of the regulation of ROS production in a signalling context and gives a new light to the possible role of 14-3-3 proteins in plant-micro-organisms interactions.
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Affiliation(s)
- Taline Elmayan
- Unité Mixte de Recherche Plante-Microbe-Environnement INRA 1088/CNRS 5184/Université de Bourgogne, BP 86510, Dijon Cedex, France
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15
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Minglin L, Yuxiu Z, Tuanyao C. Identification of genes up-regulated in response to Cd exposure in Brassica juncea L. Gene 2005; 363:151-8. [PMID: 16226851 DOI: 10.1016/j.gene.2005.07.037] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Revised: 07/12/2005] [Accepted: 07/30/2005] [Indexed: 01/19/2023]
Abstract
In this paper, the fluorescent mRNA differential display (DD) technique was applied to analyze transcriptional regulation in response to Cd treatment in a heavy-metal accumulator, Brassica juncea. 154 DD bands were identified, of which fragments corresponding to 15 and 13 cDNAs were successfully cloned from leaves and roots, respectively. Many of the genes were confirmed to have a 2-5 fold increase in expression in both roots and leaves after 48 h Cd exposure (approximately 22.4 ppm). However, several isolated genes, e.g., DD2, DD21, DD22, showed a reversed mRNA expression pattern. Sequencing revealed those Cd-induced up-regulated genes displayed mRNAs corresponding to 19 different genes, 18 of which had a clear identity to Arabidopsis thaliana sequences and a putative function was assigned to 15 of them, including the auxin-responsive GH3, ARF-like small GTPases/ARFs, ARD/ARD', APS reductase, Nop, catalase, zinc finger (C3HC4-type RING finger), diacylglycerol kinase, and haloacid dehalogenase-like hydrolase families. Three cDNAs corresponded to predicted membrane proteins (KOG3491) or a ribosome-associated membrane protein RAMP4. One other clone, DD26, did not show significant identities to any translated sequence in the GenBank database, suggesting it may either encode unidentified proteins, or correspond to un-translated, non-conserved regions of mRNA molecules. These Cd-responsive up-regulated genes are mostly also regulated by abiotic or biotic stresses, e.g., dehydration, chilling, high salt, auxin, heat and infection, in other plants. The present study leads to an increased understanding of genes and/or the biochemical pathways involved in heavy-metal resistance and accumulation in plants.
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Affiliation(s)
- Lang Minglin
- Department of Biology, Graduate University of Chinese Academy of Sciences, Beijing 100049, PR China
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