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Hu J, Bettembourg M, Xue L, Hu R, Schnürer A, Sun C, Jin Y, Sundström JF. A low-methane rice with high-yield potential realized via optimized carbon partitioning. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170980. [PMID: 38373456 DOI: 10.1016/j.scitotenv.2024.170980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/25/2024] [Accepted: 02/13/2024] [Indexed: 02/21/2024]
Abstract
Global rice cultivation significantly contributes to anthropogenic methane emissions. The methane emissions are caused by methane-producing microorganisms (methanogenic archaea) that are favoured by the anoxic conditions of paddy soils and small carbon molecules released from rice roots. However, different rice cultivars are associated with differences in methane emission rates suggesting that there is a considerable natural variation in this trait. Starting from the hypothesis that sugar allocation within a plant is an important factor influencing both yields and methane emissions, the aim of this study was to produce high-yielding rice lines associated with low methane emissions. In this study, the offspring (here termed progeny lines) of crosses between a newly characterized low-methane rice variety, Heijing 5, and three high-yielding elite varieties, Xiushui, Huayu and Jiahua, were selected for combined low-methane and high-yield properties. Analyses of total organic carbon and carbohydrates showed that the progeny lines stored more carbon in above-ground tissues than the maternal elite varieties. Also, metabolomic analysis of rhizospheric soil surrounding the progeny lines showed reduced levels of glucose and other carbohydrates. The carbon allocation, from roots to shoots, was further supported by a transcriptome analysis using massively parallel sequencing of mRNAs that demonstrated elevated expression of the sugar transporters SUT-C and SWEET in the progeny lines as compared to the parental varieties. Furthermore, measurement of methane emissions from plants, grown in greenhouse as well as outdoor rice paddies, showed a reduction in methane emissions by approximately 70 % in the progeny lines compared to the maternal elite varieties. Taken together, we report here on three independent low-methane-emission rice lines with high yield potential. We also provide a first molecular characterisation of the progeny lines that can serve as a foundation for further studies of candidate genes involved in sugar allocation and reduced methane emissions from rice cultivation.
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Affiliation(s)
- Jia Hu
- Department of Plant Biology, Sweden University of Agricultural Science, The Linnean Centre for Plant Biology, Box 7080, SE-75007 Uppsala, Sweden
| | - Mathilde Bettembourg
- Department of Plant Biology, Sweden University of Agricultural Science, The Linnean Centre for Plant Biology, Box 7080, SE-75007 Uppsala, Sweden
| | - Lihong Xue
- Key Laboratory of Agro-environment in Downstream of Yangtze plain, Ministry of Agriculture and Rural Affairs of China, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Ronggui Hu
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 43070, China
| | - Anna Schnürer
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, Box 7015, SE-750 07 Uppsala, Sweden
| | - Chuanxin Sun
- Department of Plant Biology, Sweden University of Agricultural Science, The Linnean Centre for Plant Biology, Box 7080, SE-75007 Uppsala, Sweden
| | - Yunkai Jin
- Department of Plant Biology, Sweden University of Agricultural Science, The Linnean Centre for Plant Biology, Box 7080, SE-75007 Uppsala, Sweden
| | - Jens F Sundström
- Department of Plant Biology, Sweden University of Agricultural Science, The Linnean Centre for Plant Biology, Box 7080, SE-75007 Uppsala, Sweden.
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Chen Q, Zhang C, Chen Y, Wang C, Lai Z. Transcriptomic Analysis for Diurnal Temperature Differences Reveals Gene-Regulation-Network Response to Accumulation of Bioactive Ingredients of Protocorm-like Bodies in Dendrobium officinale. PLANTS (BASEL, SWITZERLAND) 2024; 13:874. [PMID: 38592895 PMCID: PMC10975105 DOI: 10.3390/plants13060874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 04/11/2024]
Abstract
Dendrobium officinale Kimura et Migo (D. officinale) is one of the most important traditional Chinese medicinal herbs, celebrated for its abundant bioactive ingredients. This study demonstrated that the diurnal temperature difference (DIF) (T1: 13/13 °C, T2: 25/13 °C, and T3: 25/25 °C) was more favorable for high chlorophyll, increased polysaccharide, and total flavonoid contents compared to constant temperature treatments in D. officinale PLBs. The transcriptome analysis revealed 4251, 4404, and 4536 differentially expressed genes (DEGs) in three different comparisons (A: 25/13 °C vs. 13/13 °C, B: 13/13 °C vs. 25/25 °C, and C: 25/13 °C vs. 25/25 °C, respectively). The corresponding up-/down-regulated DEGs were 1562/2689, 2825/1579, and 2310/2226, respectively. GO and KEGG enrichment analyses of DEGs showed that the pathways of biosynthesis of secondary metabolites, carotenoid biosynthesis, and flavonoid biosynthesis were enriched in the top 20; further analysis of the sugar- and flavonol-metabolism pathways in D. officinale PLBs revealed that the DIF led to a differential gene expression in the enzymes linked to sugar metabolism, as well as to flavonol metabolism. Certain key metabolic genes related to ingredient accumulation were identified, including those involved in polysaccharide metabolism (SUS, SUT, HKL1, HGL, AMY1, and SS3) and flavonol (UGT73C and UGT73D) metabolism. Therefore, these findings indicated that these genes may play an important role in the regulatory network of the DIF in the functional metabolites of D. officinale PLBs. In a MapMan annotation of abiotic stress pathways, the DEGs with significant changes in their expression levels were mainly concentrated in the heat-stress pathways, including heat-shock proteins (HSPs) and heat-shock transcription factors (HSFs). In particular, the expression levels of HSP18.2, HSP70, and HSF1 were significantly increased under DIF treatment, which suggested that HSF1, HSP70 and HSP18.2 may respond to the DIF. In addition, they can be used as candidate genes to study the effect of the DIF on the PLBs of D. officinale. The results of our qPCR analysis are consistent with those of the transcriptome-expression analysis, indicating the reliability of the sequencing. The results of this study revealed the transcriptome mechanism of the DIF on the accumulation of the functional metabolic components of D. officinale. Furthermore, they also provide an important theoretical basis for improving the quality of D. officinale via the DIF in production.
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Affiliation(s)
| | | | | | | | - Zhongxiong Lai
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Q.C.); (C.Z.); (Y.C.); (C.W.)
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Zhang S, Sun J, Lu Y, Yang S, Zhang Y, Chai H, Jiang D, Dai T, Tian Z. Rubisco and sucrose synthesis and translocation are involved in the regulation of photosynthesis in wheat with different source-sink relationships. PHYSIOLOGIA PLANTARUM 2024; 176:e14196. [PMID: 38433117 DOI: 10.1111/ppl.14196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/22/2024] [Indexed: 03/05/2024]
Abstract
Source-sink relationships influence photosynthesis. So far, the limiting factors for photosynthesis of wheat cultivars with different source-sink relationships have not been determined. We aimed to determine the variation patterns of photosynthetic characteristics of wheat cultivars with different source-sink relationships. In this study, two wheat cultivars with different source-sink relationships were selected for photosynthetic physiological analyses. The results showed that YM25 (source-limited cultivar) had higher photosynthetic efficiency compared to YM1 (sink-limited cultivar). This is mainly due to a stronger photochemical efficiency, electron transfer capacity, and Rubisco carboxylation capacity of YM25. YM25 accumulated less soluble carbohydrates in flag leaves than YM1. This is mainly due to the stronger sucrose synthesis and transport capacity of YM25 by presenting higher sucrose-related enzyme activities and gene expression. A PCA analysis showed that Rubisco was the main factor limiting the photosynthetic capacity of YM25. The soluble sugar accumulation in flag leaves and sink limitation decreased the photosynthetic activity of YM1. Increased N application improved source-sink relationships and increased grain yield and source leaf photosynthetic capacity in both two wheat cultivars. Taken together, our findings suggest that Rubisco and sucrose synthesis and translocation are involved in the regulation of photosynthesis of wheat cultivars with different source-sink relationships and that source and sink limitation effects should be considered in photosynthesis.
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Affiliation(s)
- Siqi Zhang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Jiawei Sun
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Yanhua Lu
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Shuke Yang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Yafang Zhang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Huimin Chai
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Dong Jiang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Tingbo Dai
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
| | - Zhongwei Tian
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing, P.R.China
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Jiang S, An P, Xia C, Ma W, Zhao L, Liang T, Liu Q, Xu R, Huang D, Xia Z, Zou M. Genome-Wide Identification and Expression Analysis of the SUT Family from Three Species of Sapindaceae Revealed Their Role in the Accumulation of Sugars in Fruits. PLANTS (BASEL, SWITZERLAND) 2023; 13:95. [PMID: 38202403 PMCID: PMC10780545 DOI: 10.3390/plants13010095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/09/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024]
Abstract
Sapindaceae is an economically important family of Sapindales and includes many fruit crops. The dominant transport and storage form of photoassimilates in higher plants is sucrose. Sucrose transporter proteins play an irreplaceable role in the loading, transportation, unloading, and distribution of sucrose. A few SUT (sugar transporter) family genes have been identified and characterized in various plant species. In this study, 15, 15, and 10 genes were identified in litchi, longan, and rambutan, respectively, via genome-wide screening. These genes were divided into four subgroups based on phylogenetics. Gene duplication analysis suggested these genes underwent potent purifying selection and tandem duplications during evolution. The expression levels of SlSut01 and SlSut08 were significantly increased in the fruits of Sapindaceae members. The homologs of these two genes in longan and rambutan were also highly expressed in the fruits. The expression pattern of SUTs in three organs of the two varieties was also explored. Subcellular colocalization experiments revealed that the proteins encoded by both genes were present in the plasma membrane. This report provides data for the functional study of SUTs in litchi and provides a basis for screening sugar accumulation-related genes in fruits of Sapindaceae.
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Affiliation(s)
- Sirong Jiang
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Pengliang An
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Chengcai Xia
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Wanfeng Ma
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Long Zhao
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Tiyun Liang
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Qi Liu
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Rui Xu
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Dongyi Huang
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Zhiqiang Xia
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
| | - Meiling Zou
- College of Tropical Crops, Hainan University, Haikou 570228, China; (S.J.); (P.A.); (C.X.); (W.M.); (L.Z.); (T.L.); (Q.L.); (R.X.)
- Hainan Yazhou Bay Seed Laboratory, Sanya Nanfan Research Institute, Hainan University, Sanya 572025, China
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Sun N, Liu Y, Xu T, Zhou X, Xu H, Zhang H, Zhan R, Wang L. Genome-wide analysis of sugar transporter genes in maize ( Zea mays L.): identification, characterization and their expression profiles during kernel development. PeerJ 2023; 11:e16423. [PMID: 38025667 PMCID: PMC10658905 DOI: 10.7717/peerj.16423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
Sugar transporters (STs) play a crucial role in the development of maize kernels. However, very limited information about STs in maize is known. In this study, sixty-eight ZmST genes were identified from the maize genome and classified into eight major groups based on phylogenetic relationship. Gene structure analysis revealed that members within the same group shared similar exon numbers. Synteny analysis indicated that ZmSTs underwent 15 segmental duplication events under purifying selection. Three-dimensional structure of ZmSTs demonstrated the formation of a compact helix bundle composed of 8-13 trans-membrane domains. Various development-related cis-acting elements, enriched in promoter regions, were correlated with the transcriptional response of ZmSTs during kernel development. Transcriptional expression profiles exhibited expression diversity of various ZmST genes in roots, stems, leaves, tassels, cobs, embryos, endosperms and seeds tissues. During kernel development, the expression of 24 ZmST genes was significantly upregulated in the early stage of grain filling. This upregulation coincided with the sharply increased grain-filling rate observed in the early stage. Overall, our findings shed light on the characteristics of ZmST genes in maize and provide a foundation for further functional studies.
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Affiliation(s)
- Nan Sun
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- Zhaoyuan Shenghui Agricultural Technology Development Co., Ltd., Zhaoyuan, Shandong, China
| | - Yanfeng Liu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- Zhaoyuan Shenghui Agricultural Technology Development Co., Ltd., Zhaoyuan, Shandong, China
| | - Tao Xu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Xiaoyan Zhou
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Heyang Xu
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- College of Agriculture, Ludong University, Yantai, Shandong, China
| | - Hongxia Zhang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- Zhaoyuan Shenghui Agricultural Technology Development Co., Ltd., Zhaoyuan, Shandong, China
| | - Renhui Zhan
- School of Pharmacy, Shandong Technology Innovation Center of Molecular Targeting and Intelligent Diagnosis and Treatment, Binzhou Medical University, Yantai, Shandong, China
| | - Limin Wang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, Shandong, China
- Zhaoyuan Shenghui Agricultural Technology Development Co., Ltd., Zhaoyuan, Shandong, China
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Guan X, Zhang Y, Zhou L, Asad MAU, Zhao Q, Pan G, Cheng F. Disruptions of sugar utilization and carbohydrate metabolism in rice developing anthers aggravated heat stress-induced pollen abortion. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107991. [PMID: 37660606 DOI: 10.1016/j.plaphy.2023.107991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/27/2023] [Accepted: 08/28/2023] [Indexed: 09/05/2023]
Abstract
High temperature (HT) stress at reproductive stage is one of most important environment negatively affecting spikelet fertility and rice yield. In this study, the effect of HT exposure on the sugar composition and carbohydrate metabolism in developing anthers and its relation to floret fertility and pollen viability were investigated by different temperature regimes under well-controlled climatic condition. Result showed that HT exposure during microspore development significantly reduced the starch deposition in developing anther and evidently disrupted the spatial distribution of sugar and starch concentrations in different compartments of rice anther, with the higher ratio of sucrose to hexose concentrations in HT-stressed anthers relative to the control ones. Under HT exposure, the amount of starch deposition in the fraction of sporophytic tissues dropped evidently, while the concentrations of sucrose and starch in anther wall tissue enhanced significantly, suggesting that HT exposure impaired the translocation of sucrose from the anther wall tissue to the sporophytic tissues inside rice anther. Furthermore, we presented possible contribution of various genes and key enzymes involving in sugar conversion and carbohydrate metabolism in developing anther to the formation of HT-induced pollen abortion by disrupting the sugar utilization in HT-stressed anther. HT exposure suppressed the activities of cell wall and vacuolar invertase, hexokinase, and ADP-glucose pyrophosphorylase in developing anther, while it was opposite for the effect of HT exposure on sucrose synthase and fructokinase. HT-induced suppression of OsCWIN3 in the anther walls might be strongly responsible for the HT-induced impairments of sugar utilization in HT-stressed anthers.
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Affiliation(s)
- Xianyue Guan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Yan Zhang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Lujian Zhou
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Muhammad Asad Ullah Asad
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Qian Zhao
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China; Collaborative Innovation Center for Modern Crop Production, Nanjing, 210095, China
| | - Gang Pan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Fangmin Cheng
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China; Collaborative Innovation Center for Modern Crop Production, Nanjing, 210095, China.
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Sun F, Dong X, Li S, Sha H, Gao W, Bai X, Zhang L, Yang H. Genome-wide identification and expression analysis of SUT gene family members in sugar beet (Beta vulgaris L.). Gene 2023; 870:147422. [PMID: 37031883 DOI: 10.1016/j.gene.2023.147422] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/13/2023] [Accepted: 04/04/2023] [Indexed: 04/11/2023]
Abstract
Sucrose transporters (SUTs) play an important role in the transmembrane transport and distribution of sucrose, and their activity has an important impact on plant growth and crop yield. In this study, the SUT gene family was identified in the whole beet genome using bioinformatics methods, and gene characteristics, subcellular localization prediction, phylogenetic evolution, promoter cis-elements and expression patterns were systematically analyzed. A total of 9 SUT gene family members were identified from in beet genome and divided into 3 different groups (group 1, group 2, and Group 3), which were unevenly distributed on 4 chromosomes. Most SUT family members contained photoresponsive and hormone-regulated response elements. Subcellular localization prediction showed that the BvSUT genes are all located in the inner membrane, and most of the terms identified through GO enrichment analysis are classified as "membrane" related. The results of RT-qPCR showed that the expression level of the BvSUT gene was significantly higher in the tuber enlargement stage (100-140 d) than in other stages. This study is the first to analyze the BvSUT gene family in sugar beet, and it provides a theoretical basis for the functional exploration and application of SUT genes in crop improvement, especially in sugar crops.
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Affiliation(s)
- Fenglei Sun
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
| | - Xinjiu Dong
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Sizhong Li
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Hong Sha
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Weishi Gao
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Xiaoshan Bai
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Liming Zhang
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China
| | - Hongze Yang
- Research Institute of industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, China.
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8
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Harris PJ, Burrell MM, Emes MJ, Tetlow IJ. Effects of Post Anthesis High Temperature Stress on Carbon Partitioning and Starch Biosynthesis in a Spring Wheat (Triticum aestivum L.) Adapted to Moderate Growth Temperatures. PLANT & CELL PHYSIOLOGY 2023:pcad030. [PMID: 37026703 DOI: 10.1093/pcp/pcad030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
This study investigates carbon partitioning in the developing endosperm of a European variety of spring wheat subjected to moderately elevated daytime temperatures (27°C/16°C day/night) from anthesis to grain maturity. Elevated daytime temperatures caused significant reductions in both fresh and dry weights and reduced starch content of harvested grains compared to plants grown under a 20°C/16°C day/night regime. Accelerated grain development caused by elevated temperatures was accounted for by representing plant development as thermal time (°CDPA). We examined effects of high temperature stress (HTS) on uptake and partitioning of [U-14C]-sucrose supplied to isolated endosperms. HTS caused reduced sucrose uptake into developing endosperms from the second major grain filling stage (approximately 260°CDPA) up to maturity. Enzymes involved in sucrose metabolism were unaffected by HTS, whereas key enzyme activities involved in endosperm starch deposition such as ADP-glucose pyrophosphorylase and soluble isoforms of starch synthase were sensitive to HTS throughout grain development. HTS caused a decrease in other major carbon sinks such as evolved CO2, ethanol-soluble material, cell walls and protein. Despite reductions in labelling of carbon pools caused by HTS, the relative proportions of sucrose taken up by endosperm cells allocated to each cellular pool remain unchanged, except for evolved CO2, which increased under HTS and may reflect enhanced respiratory activity. The results of this study show that moderate temperature increases in some temperate wheat cultivars can cause significant yield reductions chiefly through three effects: reduced sucrose uptake by the endosperm, reduced starch synthesis, and increased partitioning of carbon into evolved CO2.
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Affiliation(s)
- P J Harris
- Department of Molecular and Cellular Biology, College of Biological Sciences, Sciences, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G2W1 Canada
| | - M M Burrell
- Department of Molecular and Cellular Biology, College of Biological Sciences, Sciences, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G2W1 Canada
| | - M J Emes
- Department of Molecular and Cellular Biology, College of Biological Sciences, Sciences, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G2W1 Canada
| | - I J Tetlow
- Department of Molecular and Cellular Biology, College of Biological Sciences, Sciences, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G2W1 Canada
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Zhang L, Xiang Z, Li J, Wang S, Chen Y, Liu Y, Mao D, Luan S, Chen L. bHLH57 confers chilling tolerance and grain yield improvement in rice. PLANT, CELL & ENVIRONMENT 2023; 46:1402-1418. [PMID: 36510797 DOI: 10.1111/pce.14513] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
Chilling stress has become a major limiting factor that reduces crop productivity worldwide. In this study, we identified a new gene bHLH57, whose product enhances chilling tolerance in rice at diverse developmental stages. bHLH57 was mainly expressed in leaves and anthers, and its protein was targeted to the nucleus. Overexpression of bHLH57 enhanced chilling tolerance by increasing trehalose synthesis, whereas its mutants by CRISPR/Cas9-mediated mutagenesis were more sensitive to chilling and had reduced trehalose. Meanwhile, bHLH57 may regulate ROS metabolism and CBFs/DREBs- dependent pathways in response to chilling stress. In addition, the overexpression of bHLH57 resulted in increased grain yield under normal and chilling conditions, however, the disruption of bHLH57 displayed decreased grain size and seed setting rate, thus reduced grain yield. Phylogenetic and nucleotide diversity analyses suggested that bHLH57 is relatively conserved in monocotyledons, and may be selected during indica populations adaptation. Taken together, we have identified a new bHLH regulator involved rice chilling tolerance and grain yield, and provide a potential target gene for improving chilling tolerance and grain yield of rice.
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Affiliation(s)
- Lin Zhang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Zhipan Xiang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Junfeng Li
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Siyao Wang
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yi Chen
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yan Liu
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Dandan Mao
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, California, USA
| | - Liangbi Chen
- Hunan Province Key Laboratory of Crop Sterile Germplasm Resource Innovation and Application, College of Life Sciences, Hunan Normal University, Changsha, China
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Kamara N, Lu Z, Jiao Y, Zhu L, Wu J, Chen Z, Wang L, Liu X, Shahid MQ. An uncharacterized protein NY1 targets EAT1 to regulate anther tapetum development in polyploid rice. BMC PLANT BIOLOGY 2022; 22:582. [PMID: 36514007 PMCID: PMC9746164 DOI: 10.1186/s12870-022-03976-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Autotetraploid rice is a useful germplasm for the breeding of polyploid rice; however, low fertility is a major hindrance for its utilization. Neo-tetraploid rice with high fertility was developed from the crossing of different autotetraploid rice lines. Our previous research showed that the mutant (ny1) of LOC_Os07g32406 (NY1), which was generated by CRISPR/Cas9 knock-out in neo-tetraploid rice, showed low pollen fertility, low seed set, and defective chromosome behavior during meiosis. However, the molecular genetic mechanism underlying the fertility remains largely unknown. RESULTS Here, cytological observations of the NY1 mutant (ny1) indicated that ny1 exhibited abnormal tapetum and middle layer development. RNA-seq analysis displayed a total of 5606 differentially expressed genes (DEGs) in ny1 compared to wild type (H1) during meiosis, of which 2977 were up-regulated and 2629 were down-regulated. Among the down-regulated genes, 16 important genes associated with tapetal development were detected, including EAT1, CYP703A3, CYP704B2, DPW, PTC1, OsABCG26, OsAGO2, SAW1, OsPKS1, OsPKS2, and OsTKPR1. The mutant of EAT1 was generated by CRISPR/Cas9 that showed abnormal tapetum and pollen wall formation, which was similar to ny1. Moreover, 478 meiosis-related genes displayed down-regulation at same stage, including 9 important meiosis-related genes, such as OsREC8, OsSHOC1, SMC1, SMC6a and DCM1, and their expression levels were validated by qRT-PCR. CONCLUSIONS Taken together, these results will aid in identifying the key genes associated with pollen fertility, which offered insights into the molecular mechanism underlying pollen development in tetraploid rice.
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Affiliation(s)
- Nabieu Kamara
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
- Sierra Leone Agricultural Research Institute (SLARI), Freetown, PMB 1313 Sierra Leone
| | - Zijun Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Yamin Jiao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Lianjun Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Jinwen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Zhixiong Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Lan Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Xiangdong Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
| | - Muhammad Qasim Shahid
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642 China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642 China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, 510642 China
- College of Agriculture, South China Agricultural University, Guangzhou, 510642 China
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