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Li Z, Ma Y, Liu Y, Wang Y, Wang X. Geographical patterns and environmental influencing factors of variations in Asterothamnus centraliasiaticus seed traits on Qinghai-Tibetan plateau. FRONTIERS IN PLANT SCIENCE 2024; 15:1366512. [PMID: 38606068 PMCID: PMC11006976 DOI: 10.3389/fpls.2024.1366512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/14/2024] [Indexed: 04/13/2024]
Abstract
Introduction Seed traits related to recruitment directly affect plant fitness and persistence. Understanding the key patterns and influencing factors of seed trait variations is conducive to assessing plant colonization and habitat selection. However, the variation patterns of the critical seed traits of shrub species are usually underrepresented and disregarded despite their vital role in alpine desert ecosystems. Methods This study gathered seeds from 21 Asterothamnus centraliasiaticus populations across the Qinghai-Tibetan Plateau, analyzing geographical patterns of seed traits to identify external environmental influences. Additionally, it explored how seed morphology and nutrients affect germination stress tolerance, elucidating direct and indirect factors shaping seed trait variations. Results The results present substantial intraspecific variations in the seed traits of A. centraliasiaticus. Seed traits except seed length-to-width ratio (LWR) all vary significantly with geographic gradients. In addition, the direct and indirect effects of climatic variables and soil nutrients on seed traits were verified in this study. Climate mainly influences seed nutrients, and soil nutrients significantly affect seed morphology and seed nutrients. Furthermore, climate directly impacts seed germination drought tolerance index (GDTI) and germination saline-alkali tolerance index (GSTI). Seed germination cold tolerance index (GCTI) is influenced by climate and soil nutrients (mostly SOC). GDTI and GSTI are prominently influenced by seed morphology (largely the seed thousand-grain weight (TGW)), and GCTI is evidently affected by seed nutrients (mainly the content of soluble protein (CSP)). Discussion The findings of this study amply explain seed trait variation patterns of shrubs in alpine desert ecosystems, possessing significant importance for understanding the mechanism of shrub adaptation to alpine desert ecosystems, predicting the outcomes of environmental change, and informing conservation efforts. This study can be a valuable reference for managing alpine desert ecosystems on the Qinghai-Tibetan Plateau.
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Affiliation(s)
| | - YuShou Ma
- *Correspondence: YuShou Ma, ; Ying Liu,
| | - Ying Liu
- *Correspondence: YuShou Ma, ; Ying Liu,
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Liu G, Liu F, Pan L, Wang H, Lu Y, Liu C, Yu S, Hu X. Agronomic, physiological and transcriptional characteristics provide insights into fatty acid biosynthesis in yellowhorn ( Xanthoceras sorbifolium Bunge) during fruit ripening. Front Genet 2024; 15:1325484. [PMID: 38356698 PMCID: PMC10864670 DOI: 10.3389/fgene.2024.1325484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Yellowhorn (Xanthoceras sorbifolium Bunge) is an oil-bearing tree species in northern China. In this study, we used yellowhorn from Heilongjiang to analyze the morphological and physiological changes of fruit development and conducted transcriptome sequencing. The results showed that the fruit experienced relatively slow growth from fertilization to DAF20 (20 days after flowering). From DAF40 to DAF60, the fruit entered an accelerated development stage, with a rapid increase in both transverse and longitudinal diameters, and the kernel contour developed completely at DAF40. From DAF60 to DAF80, the transverse and vertical diameters of the fruit developed slowly, and the overall measures remained stable until maturity. The soluble sugar, starch, and anthocyanin content gradually accumulated until reaching a peak at DAF80 and then rapidly decreased. RNA-seq analysis revealed differentially expressed genes (DEGs) in the seed coat and kernel, implying that seed components have different metabolite accumulation mechanisms. During the stages of seed kernel development, k-means clustering separated the DEGs into eight sub-classes, indicating gene expression shifts during the fruit ripening process. In subclass 8, the fatty acid biosynthesis pathway was enriched, suggesting that this class was responsible for lipid accumulation in the kernel. WGCNA revealed ten tissue-specific modules for the 12 samples among 20 modules. We identified 54 fatty acid biosynthesis pathway genes across the genome, of which 14 was quantified and confirmed by RT-qPCR. Most genes in the plastid synthesis stage showed high expression during the DAF40-DAF60 period, while genes in the endoplasmic reticulum synthesis stage showed diverse expression patterns. EVM0012847 (KCS) and EVM0002968 (HCD) showed similar high expression in the early stages and low expression in the late stages. EVM0022385 (HCD) exhibited decreased expression from DAF40 to DAF60 and then increased from DAF60 to DAF100. EVM0000575 (KCS) was increasingly expressed from DAF40 to DAF60 and then decreased from DAF60 to DAF100. Finally, we identified transcription factors (TFs) (HB-other, bHLH and ARF) that were predicted to bind to fatty acid biosynthesis pathway genes with significant correlations. These results are conducive to promoting the transcriptional regulation of lipid metabolism and the genetic improvement in terms of high lipid content of yellowhorn.
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Affiliation(s)
- Guan Liu
- State Key Laboratory of Tree Genetics and Breeding, College of Forestry, Northeast Forestry University, Harbin, China
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China
| | - Fengjiao Liu
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China
| | - Lin Pan
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China
| | - Hanhui Wang
- State Key Laboratory of Tree Genetics and Breeding, College of Forestry, Northeast Forestry University, Harbin, China
| | - Yanan Lu
- State Key Laboratory of Tree Genetics and Breeding, College of Forestry, Northeast Forestry University, Harbin, China
| | - Changhua Liu
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China
| | - Song Yu
- State Key Laboratory of Tree Genetics and Breeding, College of Forestry, Northeast Forestry University, Harbin, China
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China
| | - Xiaohang Hu
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China
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Ghimire A, Kim SH, Cho A, Jang N, Ahn S, Islam MS, Mansoor S, Chung YS, Kim Y. Automatic Evaluation of Soybean Seed Traits Using RGB Image Data and a Python Algorithm. PLANTS (BASEL, SWITZERLAND) 2023; 12:3078. [PMID: 37687325 PMCID: PMC10490075 DOI: 10.3390/plants12173078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/11/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023]
Abstract
Soybean (Glycine max) is a crucial legume crop known for its nutritional value, as its seeds provide large amounts of plant protein and oil. To ensure maximum productivity in soybean farming, it is essential to carefully choose high-quality seeds that possess desirable characteristics, such as the appropriate size, shape, color, and absence of any damage. By studying the relationship between seed shape and other traits, we can effectively identify different genotypes and improve breeding strategies to develop high-yielding soybean seeds. This study focused on the analysis of seed traits using a Python algorithm. The seed length, width, projected area, and aspect ratio were measured, and the total number of seeds was calculated. The OpenCV library along with the contour detection function were used to measure the seed traits. The seed traits obtained through the algorithm were compared with the values obtained manually and from two software applications (SmartGrain and WinDIAS). The algorithm-derived measurements for the seed length, width, and projected area showed a strong correlation with the measurements obtained using various methods, with R-square values greater than 0.95 (p < 0.0001). Similarly, the error metrics, including the residual standard error, root mean square error, and mean absolute error, were all below 0.5% when comparing the seed length, width, and aspect ratio across different measurement methods. For the projected area, the error was less than 4% when compared with different measurement methods. Furthermore, the algorithm used to count the number of seeds present in the acquired images was highly accurate, and only a few errors were observed. This was a preliminary study that investigated only some morphological traits, and further research is needed to explore more seed attributes.
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Affiliation(s)
- Amit Ghimire
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (A.G.); (M.S.I.)
| | - Seong-Hoon Kim
- National Agrobiodiversity Center, National Institute of Agricultural Sciences, RDA, Jeonju 5487, Republic of Korea;
| | - Areum Cho
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (A.C.); (N.J.); (S.A.)
| | - Naeun Jang
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (A.C.); (N.J.); (S.A.)
| | - Seonhwa Ahn
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (A.C.); (N.J.); (S.A.)
| | - Mohammad Shafiqul Islam
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (A.G.); (M.S.I.)
| | - Sheikh Mansoor
- Department of Plant Resources and Environment, Jeju National University, Jeju 63243, Republic of Korea;
| | - Yong Suk Chung
- Department of Plant Resources and Environment, Jeju National University, Jeju 63243, Republic of Korea;
| | - Yoonha Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (A.G.); (M.S.I.)
- Upland Field Machinery Research Center, Kyungpook National University, Daegu 41566, Republic of Korea
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Ma J, Liu Y, Zhang P, Chen T, Tian T, Wang P, Che Z, Shahinnia F, Yang D. Identification of quantitative trait loci (QTL) and meta-QTL analysis for kernel size-related traits in wheat (Triticum aestivum L.). BMC PLANT BIOLOGY 2022; 22:607. [PMID: 36550393 PMCID: PMC9784057 DOI: 10.1186/s12870-022-03989-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Kernel size-related traits, including kernel length (KL), kernel width (KW), kernel diameter ratio (KDR) and kernel thickness (KT), are critical determinants for wheat kernel weight and yield and highly governed by a type of quantitative genetic basis. Genome-wide identification of major and stable quantitative trait loci (QTLs) and functional genes are urgently required for genetic improvement in wheat kernel yield. A hexaploid wheat population consisting of 120 recombinant inbred lines was developed to identify QTLs for kernel size-related traits under different water environments. The meta-analysis and transcriptome evaluation were further integrated to identify major genomic regions and putative candidate genes. RESULTS The analysis of variance (ANOVA) revealed more significant genotypic effects for kernel size-related traits, indicating the moderate to high heritability of 0.61-0.89. Thirty-two QTLs for kernel size-related traits were identified, explaining 3.06%-14.2% of the phenotypic variation. Eleven stable QTLs were detected in more than three water environments. The 1103 original QTLs from the 34 previous studies and the present study were employed for the MQTL analysis and refined into 58 MQTLs. The average confidence interval of the MQTLs was 3.26-fold less than that of the original QTLs. The 1864 putative candidate genes were mined within the regions of 12 core MQTLs, where 70 candidate genes were highly expressed in spikes and kernels by comprehensive analysis of wheat transcriptome data. They were involved in various metabolic pathways, such as carbon fixation in photosynthetic organisms, carbon metabolism, mRNA surveillance pathway, RNA transport and biosynthesis of secondary metabolites. CONCLUSIONS Major genomic regions and putative candidate genes for kernel size-related traits in wheat have been revealed by an integrative strategy with QTL linkage mapping, meta-analysis and transcriptomic assessment. The findings provide a novel insight into understanding the genetic determinants of kernel size-related traits and will be useful for the marker-assisted selection of high yield in wheat breeding.
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Grants
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- GHSJ 2020-Z4 Research Program Sponsored by State Key Laboratory of Aridland Crop Science, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 21YF5NA089 Key Research and Development Program of Gansu Province, China
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 2022CYZC-44 Industrial Support Plan of Colleges and Universities in Gansu Province
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 31760385 National Natural Science Foundation of China
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- 22ZD6NA010 Key Sci & Tech Special Project of Gansu Province
- Key Sci & Tech Special Project of Gansu Province
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Affiliation(s)
- Jingfu Ma
- State Key Lab of Aridland Crop Science, Lanzhou, Gansu, China
- College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Yuan Liu
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Peipei Zhang
- State Key Lab of Aridland Crop Science, Lanzhou, Gansu, China
| | - Tao Chen
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Tian Tian
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Peng Wang
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China
| | - Zhuo Che
- Plant Seed Master Station of Gansu Province, Lanzhou, Gansu, China
| | - Fahimeh Shahinnia
- Institute for Crop Science and Plant Breeding, Bavarian State Research Centre for Agriculture, Freising, Germany
| | - Delong Yang
- State Key Lab of Aridland Crop Science, Lanzhou, Gansu, China.
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, Gansu, China.
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Sharma S, Kaur P, Gaikwad K. Role of cytokinins in seed development in pulses and oilseed crops: Current status and future perspective. Front Genet 2022; 13:940660. [PMID: 36313429 PMCID: PMC9597640 DOI: 10.3389/fgene.2022.940660] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 07/11/2022] [Indexed: 11/17/2022] Open
Abstract
Cytokinins constitutes a vital group of plant hormones regulating several developmental processes, including growth and cell division, and have a strong influence on grain yield. Chemically, they are the derivatives of adenine and are the most complex and diverse group of hormones affecting plant physiology. In this review, we have provided a molecular understanding of the role of cytokinins in developing seeds, with special emphasis on pulses and oilseed crops. The importance of cytokinin-responsive genes including cytokinin oxidases and dehydrogenases (CKX), isopentenyl transferase (IPT), and cytokinin-mediated genetic regulation of seed size are described in detail. In addition, cytokinin expression in germinating seeds, its biosynthesis, source-sink dynamics, cytokinin signaling, and spatial expression of cytokinin family genes in oilseeds and pulses have been discussed in context to its impact on increasing economy yields. Recently, it has been shown that manipulation of the cytokinin-responsive genes by mutation, RNA interference, or genome editing has a significant effect on seed number and/or weight in several crops. Nevertheless, the usage of cytokinins in improving crop quality and yield remains significantly underutilized. This is primarily due to the multigene control of cytokinin expression. The information summarized in this review will help the researchers in innovating newer and more efficient ways of manipulating cytokinin expression including CKX genes with the aim to improve crop production, specifically of pulses and oilseed crops.
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Affiliation(s)
- Sandhya Sharma
- National Institute for Plant Biotechnology, Indian Council of Agricultural Research, New Delhi, India
| | | | - Kishor Gaikwad
- National Institute for Plant Biotechnology, Indian Council of Agricultural Research, New Delhi, India
- *Correspondence: Kishor Gaikwad,
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Yirgu M, Kebede M, Feyissa T, Lakew B, Woldeyohannes AB. Morphological variations of qualitative traits of barley ( Hordeum vulgare L.) accessions in Ethiopia. Heliyon 2022; 8:e10949. [PMID: 36262303 PMCID: PMC9573889 DOI: 10.1016/j.heliyon.2022.e10949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/16/2022] [Accepted: 09/29/2022] [Indexed: 11/17/2022] Open
Abstract
Ethiopian barley germplasm is a potential source of useful traits to fight the production challenges of barley farming and to enhance yield productivity in favorable and marginal environments. A study was carried out to assess the distribution and patterns of 17 qualitative trait variations among 85 Ethiopian barley accessions using an alpha lattice design with two replications. The Shannon-Weaver diversity (H') index was used to estimate morphological diversity. Fifteen morphological traits of barley accessions originating from various regions of origins and altitude ranges were polymorphic. However, two traits including stem branching and lemma awn were monomorphic. The highest (0.94) overall mean of H' was obtained for glume colour, kernel row and kernel shape. The estimated H' ranged from 0.41 to 0.99 across regions, and 0.52 to 0.99 across altitude ranges with an overall mean of 0.76. The analysis of variance of H' showed significant variation for most studied traits. Principal components analysis revealed that eight traits were the major loading on the first two principal components that describe 38.3% of the total morphological variance. Heat map analysis based on morphological traits of barley accessions was also grouped into three distinct clusters. Thus, the present finding confirmed that the Ethiopian barley accessions showed vast morphological variations across the region of origins and altitude ranges. Based on the result, further evaluation is ongoing to exploit specific gene variations through phenotyping and genotyping trait association.
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Affiliation(s)
- Mihret Yirgu
- Department of Applied Biology, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia
- Department of Plant Science, College of Agriculture and Natural Resource, Madda Walabu University, P.O. Box 247, Robe, Oromia, Ethiopia
- Corresponding author.
| | - Mulugeta Kebede
- Department of Plant Biology and Biodiversity Management, College of Natural and Computational Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
| | - Tileye Feyissa
- Institute of Biotechnology, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
| | - Berhane Lakew
- Holetta Agricultural Research Center, Ethiopian Institute of Agricultural Research, Holetta, Ethiopia
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Sun Q, Li Y, Gong D, Hu A, Zhong W, Zhao H, Ning Q, Tan Z, Liang K, Mu L, Jackson D, Zhang Z, Yang F, Qiu F. A NAC-EXPANSIN module enhances maize kernel size by controlling nucellus elimination. Nat Commun 2022; 13:5708. [PMID: 36175574 PMCID: PMC9522829 DOI: 10.1038/s41467-022-33513-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
Maize early endosperm development is initiated in coordination with elimination of maternal nucellar tissues. However, the underlying mechanisms are largely unknown. Here, we characterize a major quantitative trait locus for maize kernel size and weight that encodes an EXPANSIN gene, ZmEXPB15. The encoded β-expansin protein is expressed specifically in nucellus, and positively controls kernel size and weight by promoting nucellus elimination. We further show that two nucellus-enriched transcription factors (TFs), ZmNAC11 and ZmNAC29, activate ZmEXPB15 expression. Accordingly, these two TFs also promote kernel size and weight through nucellus elimination regulation, and genetic analyses support their interaction with ZmEXPB15. Importantly, hybrids derived from a ZmEXPB15 overexpression line have increased kernel weight, demonstrates its potential value in breeding. Together, we reveal a pathway modulating the cellular processes of maternal nucellus elimination and early endosperm development, and an approach to improve kernel weight. Current studies of maize kernel development mostly focus on endosperm and embryo development, and little is known about the control of the nucellus tissue. Here, the authors report a NAC-EXPB15 pathway that regulate maize kernel size by modulating nucellus elimination and early endosperm development.
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Affiliation(s)
- Qin Sun
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Yunfu Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Dianming Gong
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Aoqing Hu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Wanshun Zhong
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Hailiang Zhao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Qiang Ning
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Zengdong Tan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Kun Liang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Luyao Mu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - David Jackson
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China.,Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, 11724, USA
| | - Zuxin Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China.,Hubei Hongshan Laboratory, 430070, Wuhan, Hubei, China
| | - Fang Yang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China. .,Hubei Hongshan Laboratory, 430070, Wuhan, Hubei, China.
| | - Fazhan Qiu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China. .,Hubei Hongshan Laboratory, 430070, Wuhan, Hubei, China.
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Huang ZH, Bao K, Jing ZH, Wang Q, Duan HF, Zhang S, Tao WW, Wu QN. Euryale Small Auxin Up RNA62 promotes cell elongation and seed size by altering the distribution of indole-3-acetic acid under the light. FRONTIERS IN PLANT SCIENCE 2022; 13:931063. [PMID: 36160968 PMCID: PMC9500450 DOI: 10.3389/fpls.2022.931063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/15/2022] [Indexed: 06/01/2023]
Abstract
Euryale (Euryale ferox Salisb.) is an aquatic crop used as both food and drug in Asia, but its utilization is seriously limited due to low yield. Previously, we hypothesized that Euryale small auxin up RNAs (EuSAURs) regulate seed size, but the underlying biological functions and molecular mechanisms remain unclear. Here, we observed that the hybrid Euryale lines (HL) generate larger seeds with higher indole-3-acetic acid (IAA) concentrations than those in the North Gordon Euryale (WT). Histological analysis suggested that a larger ovary in HL is attributed to longer cells around. Overexpression of EuSAUR62 in rice (Oryza sativa L.) resulted in larger glumes and grains and increased the length of glume cells. Immunofluorescence and protein interaction assays revealed that EuSAUR62 modulates IAA accumulation around the rice ovary by interacting with the rice PIN-FORMED 9, an auxin efflux carrier protein. Euryale basic region/leucine zipper 55 (EubZIP55), which was highly expressed in HL, directly binds to the EuSAUR62 promoter and activated the expression of EuSAUR62. Constant light increased the expression of both EubZIP55 and EuSAUR62 with auxin-mediated hook curvature in HL seedlings. Overall, we proposed that EuSAUR62 is a molecular bridge between light and IAA and plays a crucial role in regulating the size of the Euryale seed.
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Affiliation(s)
- Zhi-heng Huang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Ke Bao
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Zong-hui Jing
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Qian Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Hui-fang Duan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Sen Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Wei-wei Tao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
| | - Qi-nan Wu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing, China
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Li YX, Lu J, He C, Wu X, Cui Y, Chen L, Zhang J, Xie Y, An Y, Liu X, Zhen S, Liu Y, Li C, Zhang D, Shi YS, Song Y, Wang J, Li Y, Wang G, Fu J, Wang T. cis-Regulatory variation affecting gene expression contributes to the improvement of maize kernel size. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1595-1608. [PMID: 35860955 DOI: 10.1111/tpj.15910] [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: 11/07/2021] [Revised: 05/09/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
cis-Regulatory variations contribute to trait evolution and adaptation during crop domestication and improvement. As the most important harvested organ in maize (Zea mays L.), kernel size has undergone intensive selection for size. However, the associations between maize kernel size and cis-regulatory variations remain unclear. We chose two independent association populations to dissect the genetic architecture of maize kernel size together with transcriptomic and genotypic data. The resulting phenotypes reflected a strong influence of population structure on kernel size. Compared with genome-wide association studies (GWASs), which accounted for population structure and relatedness, GWAS based on a naïve or simple linear model revealed additional associated single-nucleotide polymorphisms significantly involved in the conserved pathways controlling seed size in plants. Regulation analyses through expression quantitative trait locus mapping revealed that cis-regulatory variations likely control kernel size by fine-tuning the expression of proximal genes, among which ZmKL1 (GRMZM2G098305) was transgenically validated. We also proved that the pyramiding of the favorable cis-regulatory variations has contributed to the improvement of maize kernel size. Collectively, our results demonstrate that cis-regulatory variations, together with their regulatory genes, provide excellent targets for future maize improvement.
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Affiliation(s)
- Yong-Xiang Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jiawen Lu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- Center for Seed Science and Technology, Beijing Innovation Center for Seed Technology (MOA), Key Laboratory of Crop Heterosis Utilization (MOE), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Cheng He
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- Department of Plant Pathology, Kansas State University, Manhattan, Kansas, 66506, USA
| | - Xun Wu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yu Cui
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Lin Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jie Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yuxin Xie
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yixin An
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xuyang Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Sihan Zhen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yunjun Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chunhui Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Dengfeng Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yun-Su Shi
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yanchun Song
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jianhua Wang
- Center for Seed Science and Technology, Beijing Innovation Center for Seed Technology (MOA), Key Laboratory of Crop Heterosis Utilization (MOE), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Yu Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guoying Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Junjie Fu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tianyu Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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10
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Das AK, Hao L. Functional characterization of ZmbHLH121, a bHLH transcription factor, focusing on Zea mays kernel development. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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11
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Wang ZL, Yao F, Hui M, Wu D, Wang Y, Han X, Cao X, Li YH, Li H, Wang H. Fertility analysis of intraspecific hybrids in Vitis vinifera and screening of superior hybrid combinations. FRONTIERS IN PLANT SCIENCE 2022; 13:940540. [PMID: 36035711 PMCID: PMC9403984 DOI: 10.3389/fpls.2022.940540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The correlations were explored between fertility indicators of intraspecific V. vinifera hybrids and different cultivars were subjected to selfing or used in reciprocal crosses by testing them as female parents or male parents. Two cold-resistant and four high-quality cultivars were selected, and the offspring of fourteen crosses and six self-combinations were evaluated. The pollen viability of the six cultivars was determined by TTC staining. Compatibility and the rates of fruit-setting, seediness, germination, emergence, and seedling were measured as parameters that can affect fertility of both hybridization and self-crossing processes. Using principal component analysis, the six fertility indexes were transformed into comprehensive principal components, and the weights of the indexes were determined. Combined with the membership function method, the fertility index was comprehensively evaluated for different crosses to screen for hybrid combinations with higher fertility. The results showed a high positive correlation between the pollen viability of the cultivar subjected to selfing and the fruit-setting rate, seediness rate, and hybrid compatibility index of the cultivar used as the male parent for crossing. Additionally, there was a one-to-one positive correlation between the fruit-setting rate, germination rate, emergence rate, and seedling rate of the selfed cultivar and the fruit-setting rate, germination rate, and seedling rate of the cultivar used as the female parent for crossing. There was some variation in the comprehensive fertility index values for the parents and combinations in different years. The comprehensive fertility index was always the highest for Ecolly as the male parent. The composite fertility index values were relatively high when Dunkelfelder, Cabernet Sauvignon, or Marselan were used as the female parent. The combinations of C1 (Cabernet Sauvignon × Ecolly), C3 (Marselan × Ecolly) and C6 (Dunkelfelder × Ecolly) exhibited relatively high comprehensive fertility indices, and pedigree clustering shows that these three combinations cluster into one class of highly fertile hybrid combinations. This study provides the basis for effective intraspecific hybrid breeding of grape (V. vinifera).
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Affiliation(s)
- Zhi-Lei Wang
- College of Enology, Northwest A&F University, Xianyang, China
| | - Fei Yao
- College of Enology, Northwest A&F University, Xianyang, China
| | - Miao Hui
- College of Enology, Northwest A&F University, Xianyang, China
| | - Dong Wu
- College of Enology, Northwest A&F University, Xianyang, China
| | - Ying Wang
- College of Enology, Northwest A&F University, Xianyang, China
| | - Xing Han
- College of Enology, Northwest A&F University, Xianyang, China
| | - Xiao Cao
- College of Enology, Northwest A&F University, Xianyang, China
| | - Yi-Han Li
- College of Enology, Northwest A&F University, Xianyang, China
| | - Hua Li
- College of Enology, Northwest A&F University, Xianyang, China
- Shaanxi Engineering Research Center for Viti-Viniculture, Xianyang, China
- China Wine Industry Technology Institute, Yinchuan, China
- Engineering Research Center for Viti-Viniculture, National Forestry and Grassland Administration, Xianyang, China
| | - Hua Wang
- College of Enology, Northwest A&F University, Xianyang, China
- Shaanxi Engineering Research Center for Viti-Viniculture, Xianyang, China
- China Wine Industry Technology Institute, Yinchuan, China
- Engineering Research Center for Viti-Viniculture, National Forestry and Grassland Administration, Xianyang, China
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12
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Experimental Evidence for Seed Metabolic Allometry in Barrel Medic (Medicago truncatula Gaertn.). Int J Mol Sci 2022; 23:ijms23158484. [PMID: 35955618 PMCID: PMC9369157 DOI: 10.3390/ijms23158484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/22/2022] [Accepted: 07/28/2022] [Indexed: 12/10/2022] Open
Abstract
Seed size is often considered to be an important trait for seed quality, i.e., vigour and germination performance. It is believed that seed size reflects the quantity of reserve material and thus the C and N sources available for post-germinative processes. However, mechanisms linking seed size and quality are poorly documented. In particular, specific metabolic changes when seed size varies are not well-known. To gain insight into this aspect, we examined seed size and composition across different accessions of barrel medic (Medicago truncatula Gaertn.) from the genetic core collection. We conducted multi-elemental analyses and isotope measurements, as well as exact mass GC–MS metabolomics. There was a systematic increase in N content (+0.17% N mg−1) and a decrease in H content (–0.14% H mg−1) with seed size, reflecting lower lipid and higher S-poor protein quantity. There was also a decrease in 2H natural abundance (δ2H), due to the lower prevalence of 2H-enriched lipid hydrogen atoms that underwent isotopic exchange with water during seed development. Metabolomics showed that seed size correlates with free amino acid and hexoses content, and anticorrelates with amino acid degradation products, disaccharides, malic acid and free fatty acids. All accessions followed the same trend, with insignificant differences in metabolic properties between them. Our results show that there is no general, proportional increase in metabolite pools with seed size. Seed size appears to be determined by metabolic balance (between sugar and amino acid degradation vs. utilisation for storage), which is in turn likely determined by phloem source metabolite delivery during seed development.
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13
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Evaluation of the Heterogeneity of Wheat Kernels as a Traditional Model Object in Connection with the Asymmetry of Development. Symmetry (Basel) 2022. [DOI: 10.3390/sym14061124] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Wheat is one of the most important crops in the world, providing food for most of the world’s population. Wheat seeds are a popular model object for many experiments to evaluate various factors that improve germination or protect against various adverse stressful effects. Based on the high significance of increasing the productivity of this cereal crop and the applicability of this object, a detailed statistical evaluation of wheat grain (kernel) morphometry was carried out to assess the asymmetry of parameters of this ideal model. Depending on the location of the kernels in the spikelet of a wheat spike, there was a significant asymmetry between the right and left cheeks of the kernels located closer or further from the center of the spikelet. The expressiveness of asymmetry, and consequently, the kernel deformation was higher in the lower kernels of the spikelet. The degree of symmetry; that is, the similarity of the two halves (cheeks) and the kernel as a whole, was higher in kernels located higher in the spikelet. It seems that the reason for this phenomenon lies in the mechanical nature of kernel deformation. The ultrastructure of A-type and B-type starch grains in the central part of the kernel had significant differences between the upper and lower kernels, which indicated in favor of a high probability of differences by the composition and quality of kernels of the same variety when assessed separately. Uniform development of kernels and smaller differences between them may reveal more valuable genotypes in the future, provided their steady reproduction under adverse conditions of a changing climate.
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14
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Sun Q, Hu A, Mu L, Zhao H, Qin Y, Gong D, Qiu F. Identification of a candidate gene underlying qHKW3, a QTL for hundred-kernel weight in maize. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:1579-1589. [PMID: 35179613 DOI: 10.1007/s00122-022-04055-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
qHKW3, a quantitative trait locus for hundred-kernel weight, harbors the proposed causal gene Zm00001d044081, encoding a homeobox-leucine zipper protein (ATHB-4) that might affect kernel size and weight. Kernel size and weight are key traits that contribute greatly to grain yield per year in maize (Zea mays). Here, we developed the chromosome segment substitution line (CSSL), H15-6-2, with smaller kernel size and lower kernel weight across environments compared to the background line Ye478. Histological analysis suggested that a slower kernel filling rate of H15-6-2 contributes to its small-kernel size and reduced hundred-kernel weight. We identified a quantitative trait locus (QTL) explaining 23% of the phenotypic variation in hundred-kernel weight. This QTL, qHKW3, was fine mapped to an interval of approximately 40.66-kb harboring the gene Zm00001d044081. The upstream sequence and its expression level of Zm00001d044081 in kernels at 6 days after pollination (DAP) showed obvious differences between the near-isogenic lines HKW3Ye478 and HKW3H15-6-2. We further confirmed the effects of the Zm00001d044081 promoter on maize kernel size and weight in an independent association mapping panel with 513 lines by candidate regional association analysis. We propose that Zm00001d044081, which encodes the homeobox-leucine zipper protein ATHB-4, is the causal gene of qHKW3, representing an attractive target for the genetic improvement of maize yield.
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Affiliation(s)
- Qin Sun
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Aoqing Hu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Luyao Mu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Hailiang Zhao
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Yao Qin
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Dianming Gong
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Fazhan Qiu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China.
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15
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Grain Size Associated Genes and the Molecular Regulatory Mechanism in Rice. Int J Mol Sci 2022; 23:ijms23063169. [PMID: 35328589 PMCID: PMC8953112 DOI: 10.3390/ijms23063169] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 01/17/2023] Open
Abstract
Grain size is a quantitative trait that is controlled by multiple genes. It is not only a yield trait, but also an important appearance quality of rice. In addition, grain size is easy to be selected in evolution, which is also a significant trait for studying rice evolution. In recent years, many quantitative trait loci (QTL)/genes for rice grain size were isolated by map-based cloning or genome-wide association studies, which revealed the genetic and molecular mechanism of grain size regulation in part. Here, we summarized the QTL/genes cloned for grain size and the regulation mechanism with a view to provide the theoretical basis for improving rice yield and breeding superior varieties.
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16
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Castillo-Bravo R, Fort A, Cashell R, Brychkova G, McKeown PC, Spillane C. Parent-of-Origin Effects on Seed Size Modify Heterosis Responses in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2022; 13:835219. [PMID: 35330872 PMCID: PMC8940307 DOI: 10.3389/fpls.2022.835219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/19/2022] [Indexed: 05/05/2023]
Abstract
Parent-of-origin effects arise when a phenotype depends on whether it is inherited maternally or paternally. Parent-of-origin effects can exert a strong influence on F1 seed size in flowering plants, an important agronomic and life-history trait that can contribute to biomass heterosis. Here we investigate the natural variation in the relative contributions of the maternal and paternal genomes to F1 seed size across 71 reciprocal pairs of F1 hybrid diploids and the parental effect on F1 seed size heterosis. We demonstrate that the paternally derived genome influences F1 seed size more significantly than previously appreciated. We further demonstrate (by disruption of parental genome dosage balance in F1 triploid seeds) that hybridity acts as an enhancer of genome dosage effects on F1 seed size, beyond that observed from hybridity or genome dosage effects on their own. Our findings indicate that interactions between genetic hybridity and parental genome dosage can enhance heterosis effects in plants, opening new avenues for boosting heterosis breeding in crop plants.
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17
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Wang W, Xiong H, Sun K, Zhang B, Sun MX. New insights into cell-cell communications during seed development in flowering plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:215-229. [PMID: 34473416 DOI: 10.1111/jipb.13170] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
The evolution of seeds is a major reason why flowering plants are a dominant life form on Earth. The developing seed is composed of two fertilization products, the embryo and endosperm, which are surrounded by a maternally derived seed coat. Accumulating evidence indicates that efficient communication among all three seed components is required to ensure coordinated seed development. Cell communication within plant seeds has drawn much attention in recent years. In this study, we review current knowledge of cross-talk among the endosperm, embryo, and seed coat during seed development, and highlight recent advances in this field.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Hanxian Xiong
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Kaiting Sun
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Bo Zhang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Meng-Xiang Sun
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
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18
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Scotti-Campos P, Oliveira K, Pais IP, Bagulho AS, Semedo JN, Serra O, Simões F, Lidon FC, Coutinho J, Maçãs B. Grain Composition and Quality in Portuguese Triticum aestivum Germplasm Subjected to Heat Stress after Anthesis. PLANTS 2022; 11:plants11030365. [PMID: 35161344 PMCID: PMC8839059 DOI: 10.3390/plants11030365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/20/2022] [Accepted: 01/20/2022] [Indexed: 11/16/2022]
Abstract
Bread wheat (Triticum aestivum) is a major crop worldwide, and it is highly susceptible to heat. In this work, grain production and composition were evaluated in Portuguese T. aestivum germplasm (landraces and commercial varieties), which was subjected to heat after anthesis (grain filling stage). Heat increased the test weight (TW) in Nabão, Grécia and Restauração, indicating an improved flour-yield potential. Mocho de Espiga Branca (MEB) and Transmontano (T94) showed higher thousand-kernel weight (TKW). Gentil Rosso presented increased soluble sugars, which are yeast substrates in the bread-making process. Ardila stood out for its protein increase under heat. Overall SDS was unaffected by higher temperature, but increased in T94, indicating a better dough elasticity for bread-making purposes. Under heat, lipid content was maintained in most genotypes, being endogenous fatty acids (FAs) key players in fresh bread quality. Lipid unsaturation, evaluated through the double bond index (DBI), also remained unaffected in most genotypes, suggesting a lower flour susceptibility to lipoperoxidation. In Grécia, heat promoted a higher abundance of monounsaturated oleic (C18:1) and polyunsaturated linoleic (C18:2) acids, which are essential fatty acids in the human diet. This work highlighted a great variability in most parameters both under control conditions or in response to heat during grain filling. Cluster analysis of traits revealed a lower susceptibility to heat during grain filling in Ardila, Restauração, and Ruivo, in contrast to MEQ, which seems to be more differentially affected at this stage. Characterization and identification of more favorable features under adverse environments may be relevant for agronomic, industrial, or breeding purposes, in view of a better crop adaptation to changing climate and an improved crop sustainability in agricultural systems more prone to heat stress.
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Affiliation(s)
- Paula Scotti-Campos
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Quinta do Marquês, Av. República, 2784-505 Oeiras, Portugal; (I.P.P.); (J.N.S.); (F.S.)
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
- Correspondence:
| | - Karliana Oliveira
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
| | - Isabel P. Pais
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Quinta do Marquês, Av. República, 2784-505 Oeiras, Portugal; (I.P.P.); (J.N.S.); (F.S.)
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
| | - Ana Sofia Bagulho
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Estrada Gil Vaz, Ap. 6, 7350-901 Elvas, Portugal
| | - José N. Semedo
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Quinta do Marquês, Av. República, 2784-505 Oeiras, Portugal; (I.P.P.); (J.N.S.); (F.S.)
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
| | - Octávio Serra
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Banco Português de Germoplasma Vegetal, Quinta de S. José, S. Pedro de Merelim, 4700-859 Braga, Portugal;
| | - Fernanda Simões
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Quinta do Marquês, Av. República, 2784-505 Oeiras, Portugal; (I.P.P.); (J.N.S.); (F.S.)
| | - Fernando C. Lidon
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
- Earth Sciences Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - José Coutinho
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Estrada Gil Vaz, Ap. 6, 7350-901 Elvas, Portugal
| | - Benvindo Maçãs
- GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (K.O.); (A.S.B.); (F.C.L.); (J.C.); (B.M.)
- Instituto Nacional de Investigação Agrária e Veterinária, I.P., Estrada Gil Vaz, Ap. 6, 7350-901 Elvas, Portugal
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19
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Du Z, Huang Z, Li J, Bao J, Tu H, Zeng C, Wu Z, Fu H, Xu J, Zhou D, Zhu C, Fu J, He H. qTGW12a, a naturally varying QTL, regulates grain weight in rice. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:2767-2776. [PMID: 34021769 PMCID: PMC8354980 DOI: 10.1007/s00122-021-03857-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/10/2021] [Indexed: 05/18/2023]
Abstract
KEY MESSAGE A stable QTL associated with rice grain type with a large effect value was found in multiple environments, and its candidate genes were verified by genetic transformation. Rice (Oryza sativa L.) grain size is critical to both yield and appearance quality. Therefore, the discovery and identification of rice grain size genes can provide pathways for the cultivation of high-yielding varieties. In the present work, 45,607 SNP markers were used to construct a high-density genetic map of rice recombinant inbred lines, and hence a total of 14 quantitative trait loci (QTLs) were detected based on the phenotypic data of grain weight, grain length and grain width under four different environments. qTGW12a and qGL12 are newly detected QTLs related to grain weight, and are located between 22.43 Mb and 22.45 Mb on chromosome 12. Gene annotation shows that the QTL region contains the LOC_Os12g36660 annotated gene, which encodes the multidrug and toxic compound extrusion (MATE) transporter. Mutations in exons and the splice site were responsible for the changes in grain type and weight. Gene knockout experiments were used to verify these results. Hence, these results provide a basis for the cloning of qTGW12a. This discovery provides new insights for studying the genetic mechanism of rice grain morphology, and reveals a promising gene to ultimately increase rice yield.
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Affiliation(s)
- Zhixuan Du
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Zhou Huang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Jianbin Li
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Jianzhong Bao
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Hang Tu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Chuihai Zeng
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Zheng Wu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Haihui Fu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Jie Xu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Dahu Zhou
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Changlan Zhu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China
| | - Junru Fu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China.
| | - Haohua He
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Research Center of Super Rice Engineering and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi Province, China.
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Paolo D, Orozco-Arroyo G, Rotasperti L, Masiero S, Colombo L, de Folter S, Ambrose BA, Caporali E, Ezquer I, Mizzotti C. Genetic Interaction of SEEDSTICK, GORDITA and AUXIN RESPONSE FACTOR 2 during Seed Development. Genes (Basel) 2021; 12:1189. [PMID: 34440362 PMCID: PMC8393894 DOI: 10.3390/genes12081189] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 02/07/2023] Open
Abstract
Seed development is under the control of complex and coordinated molecular networks required for the formation of its different components. The seed coat development largely determines final seed size and shape, in addition to playing a crucial role in protecting the embryo and promoting germination. In this study, we investigated the role of three transcription factors known to be active during seed development in Arabidopsis thaliana: SEEDSTICK (STK) and GORDITA (GOA), two MADS-domain proteins, and AUXIN RESPONSE FACTOR 2 (ARF2), belonging to the ARF family. Through a reverse genetic approach, we characterized the seed phenotypes of all the single, double and triple loss-of-function mutants in relation to seed size/shape and the effects on metabolic pathways occurring in the seed coat. This approach revealed that dynamic networks involving these TFs are active throughout ovule and seed development, affecting the formation of the seed coat. Notably, while the genetic interaction among these genes results in synergies that control the promotion of cell expansion in the seed coat upon pollination and production of proanthocyanidins, functional antagonists arise in the control of cell proliferation and release of mucilage.
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Affiliation(s)
- Dario Paolo
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Gregorio Orozco-Arroyo
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Lisa Rotasperti
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Simona Masiero
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Lucia Colombo
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Stefan de Folter
- Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Irapuato CP 36824, Guanajuato, Mexico;
| | | | - Elisabetta Caporali
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Ignacio Ezquer
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
| | - Chiara Mizzotti
- Dipartimento di BioScienze, Università degli Studi di Milano, 20133 Milano, Italy; (D.P.); (G.O.-A.); (L.R.); (S.M.); (L.C.); (E.C.); (I.E.)
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21
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Boukail S, Macharia M, Miculan M, Masoni A, Calamai A, Palchetti E, Dell'Acqua M. Genome wide association study of agronomic and seed traits in a world collection of proso millet (Panicum miliaceum L.). BMC PLANT BIOLOGY 2021; 21:330. [PMID: 34243721 PMCID: PMC8268170 DOI: 10.1186/s12870-021-03111-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/23/2021] [Indexed: 05/28/2023]
Abstract
BACKGROUND The climate crisis threatens sustainability of crop production worldwide. Crop diversification may enhance food security while reducing the negative impacts of climate change. Proso millet (Panicum milaceum L.) is a minor cereal crop which holds potential for diversification and adaptation to different environmental conditions. In this study, we assembled a world collection of proso millet consisting of 88 varieties and landraces to investigate its genomic and phenotypic diversity for seed traits, and to identify marker-trait associations (MTA). RESULTS Sequencing of restriction-site associated DNA fragments yielded 494 million reads and 2,412 high quality single nucleotide polymorphisms (SNPs). SNPs were used to study the diversity in the collection and perform a genome wide association study (GWAS). A genotypic diversity analysis separated accessions originating in Western Europe, Eastern Asia and Americas from accessions sampled in Southern Asia, Western Asia, and Africa. A Bayesian structure analysis reported four cryptic genetic groups, showing that landraces accessions had a significant level of admixture and that most of the improved proso millet materials clustered separately from landraces. The collection was highly diverse for seed traits, with color varying from white to dark brown and width spanning from 1.8 to 2.6 mm. A GWAS study for seed morphology traits identified 10 MTAs. In addition, we identified three MTAs for agronomic traits that were previously measured on the collection. CONCLUSION Using genomics and automated seed phenotyping, we elucidated phylogenetic relationships and seed diversity in a global millet collection. Overall, we identified 13 MTAs for key agronomic and seed traits indicating the presence of alleles with potential for application in proso breeding programs.
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Affiliation(s)
- Sameh Boukail
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Mercy Macharia
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Mara Miculan
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Alberto Masoni
- School of Agriculture, University of Florence, Florence, Italy
| | | | | | - Matteo Dell'Acqua
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.
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Moreno Curtidor C, Annunziata MG, Gupta S, Apelt F, Richard SI, Kragler F, Mueller-Roeber B, Olas JJ. Physiological Profiling of Embryos and Dormant Seeds in Two Arabidopsis Accessions Reveals a Metabolic Switch in Carbon Reserve Accumulation. FRONTIERS IN PLANT SCIENCE 2020; 11:588433. [PMID: 33343596 PMCID: PMC7738343 DOI: 10.3389/fpls.2020.588433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
In flowering plants, sugars act as carbon sources providing energy for developing embryos and seeds. Although most studies focus on carbon metabolism in whole seeds, knowledge about how particular sugars contribute to the developmental transitions during embryogenesis is scarce. To develop a quantitative understanding of how carbon composition changes during embryo development, and to determine how sugar status contributes to final seed or embryo size, we performed metabolic profiling of hand-dissected embryos at late torpedo and mature stages, and dormant seeds, in two Arabidopsis thaliana accessions with medium [Columbia-0 (Col-0)] and large [Burren-0 (Bur-0)] seed sizes, respectively. Our results show that, in both accessions, metabolite profiles of embryos largely differ from those of dormant seeds. We found that developmental transitions from torpedo to mature embryos, and further to dormant seeds, are associated with major metabolic switches in carbon reserve accumulation. While glucose, sucrose, and starch predominantly accumulated during seed dormancy, fructose levels were strongly elevated in mature embryos. Interestingly, Bur-0 seeds contain larger mature embryos than Col-0 seeds. Fructose and starch were accumulated to significantly higher levels in mature Bur-0 than Col-0 embryos, suggesting that they contribute to the enlarged mature Bur-0 embryos. Furthermore, we found that Bur-0 embryos accumulated a higher level of sucrose compared to hexose sugars and that changes in sucrose metabolism are mediated by sucrose synthase (SUS), with SUS genes acting non-redundantly, and in a tissue-specific manner to utilize sucrose during late embryogenesis.
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Affiliation(s)
- Catalina Moreno Curtidor
- Department of Molecular Biology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany
| | | | - Saurabh Gupta
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany
| | - Federico Apelt
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany
| | - Sarah Isabel Richard
- Department of Molecular Biology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | - Friedrich Kragler
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany
| | - Bernd Mueller-Roeber
- Department of Molecular Biology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany
| | - Justyna Jadwiga Olas
- Department of Molecular Biology, Institute of Biochemistry and Biology, University of Potsdam, Potsdam, Germany
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23
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Morales A, Teapal J, Ammerlaan JMH, Yin X, Evers JB, Anten NPR, Sasidharan R, van Zanten M. A high throughput method for quantifying number and size distribution of Arabidopsis seeds using large particle flow cytometry. PLANT METHODS 2020; 16:27. [PMID: 32158493 PMCID: PMC7053093 DOI: 10.1186/s13007-020-00572-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/20/2020] [Indexed: 05/31/2023]
Abstract
BACKGROUND Seed size and number are important plant traits from an ecological and horticultural/agronomic perspective. However, in small-seeded species such as Arabidopsis thaliana, research on seed size and number is limited by the absence of suitable high throughput phenotyping methods. RESULTS We report on the development of a high throughput method for counting seeds and measuring individual seed sizes. The method uses a large-particle flow cytometer to count individual seeds and sort them according to size, allowing an average of 12,000 seeds/hour to be processed. To achieve this high throughput, post harvested seeds are first separated from remaining plant material (dust and chaff) using a rapid sedimentation-based method. Then, classification algorithms are used to refine the separation process in silico. Accurate identification of all seeds in the samples was achieved, with relative errors below 2%. CONCLUSION The tests performed reveal that there is no single classification algorithm that performs best for all samples, so the recommended strategy is to train and use multiple algorithms and use the median predictions of seed size and number across all algorithms. To facilitate the use of this method, an R package (SeedSorter) that implements the methodology has been developed and made freely available. The method was validated with seed samples from several natural accessions of Arabidopsis thaliana, but our analysis pipeline is applicable to any species with seed sizes smaller than 1.5 mm.
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Affiliation(s)
- Alejandro Morales
- Centre for Crop Systems Analysis, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
- Molecular Plant Physiology, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
| | - J. Teapal
- Developmental Biology, Institute of Biodynamics and Biocomplexity, Utrecht University, Utrecht, The Netherlands
| | - J. M. H. Ammerlaan
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
| | - X. Yin
- Centre for Crop Systems Analysis, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands
| | - J. B. Evers
- Centre for Crop Systems Analysis, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands
| | - N. P. R. Anten
- Centre for Crop Systems Analysis, Plant Sciences Group, Wageningen University & Research, Wageningen, The Netherlands
| | - R. Sasidharan
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
| | - M. van Zanten
- Molecular Plant Physiology, Institute of Environmental Biology, Utrecht University, Utrecht, The Netherlands
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24
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Yu F, Wan W, Lv MJ, Zhang JL, Meng LS. Molecular Mechanism Underlying the Effect of the Intraspecific Alternation of Seed Size on Plant Drought Tolerance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:703-711. [PMID: 31904950 DOI: 10.1021/acs.jafc.9b06491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In crop plants, the yield loss caused by drought exceeds the losses resulting from other adverse environment stresses. In numerous plant species, seedling establishment is positively correlated with the initial seed size under drought stress conditions. In intra- and interspecies, plants with large seeds can withstand water deficiency stresses, whereas those with small seeds are efficient colonizers as a result of their ability to produce more seeds. Therefore, larger initial seeds confer more drought resistance on germinating seedlings. Although this phenomenon has been observed by evolutionary biologists and ecologists, the correlation of initial seed size with the drought resistance of seedlings/plants is not well-reviewed and characterized. Furthermore, the related molecular mechanisms are unknown. Understanding these mechanisms will benefit future breeding or design strategies to increase crop yields. In the present review, we focus on recent research to analyze the genetic factors of plants/crops involved in the regulation of seed size and drought tolerance and their corresponding signal transduction pathways. Several signaling pathways that determine plant drought tolerance through influencing the initial seed size are identified. Such pathways include those that are involved in mitogen-activated protein kinase, abscisic acid, brassinosteroids, and several transcription factors and sugar signaling pathways.
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Affiliation(s)
- Fei Yu
- Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
| | - Wen Wan
- Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
| | - Meng-Jiao Lv
- Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
| | - Jin-Lin Zhang
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou , Gansu 730020 , People's Republic of China
| | - Lai-Sheng Meng
- Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
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25
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Lv MJ, Wan W, Yu F, Meng LS. New Insights into the Molecular Mechanism Underlying Seed Size Control under Drought Stress. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:9697-9704. [PMID: 31403787 DOI: 10.1021/acs.jafc.9b02497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In higher plants, seed size is an important parameter and agricultural trait in many aspects of evolutionary fitness. The loss of water-deficiency-induced crop yield is the largest among all natural hazards. Under water-deficient stress, the most prevalent response to terminal stress is to accelerate the early arrest of floral development and, thereby, to accelerate fruit/seed production, which consequently reduces seed size. This phenomenon is well-known, but its molecular mechanism is not well-reviewed and characterized. However, increasing evidence have indicated that water-deficient stress is always coordinated with three genetic signals (i.e., seed size regulators, initial seed size, and fruit number) that decide the final seed size. Here, our review presents new insights into the mechanism underlying cross-talk water-deficient stress signaling with three genetic signals controlling final seed size. These new insights may aid in preliminary screening, identifying novel genetic factors and future design strategies, or breeding to increase crop yield.
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Affiliation(s)
- Meng-Jiao Lv
- Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
| | - Wen Wan
- Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
| | - Fei Yu
- Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
| | - Lai-Sheng Meng
- Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , People's Republic of China
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26
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Li W, Bai Q, Zhan W, Ma C, Wang S, Feng Y, Zhang M, Zhu Y, Cheng M, Xi Z. Fine mapping and candidate gene analysis of qhkw5-3, a major QTL for kernel weight in maize. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:2579-2589. [PMID: 31187154 DOI: 10.1007/s00122-019-03372-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
KEY MESSAGE: qhkw5-3, a major QTL for kernel weight in maize, was mapped to an interval of 125.3 kb between the InDel markers InYM20 and InYM36, and the candidate genes were analysed. Yield, of which kernel weight is a major component, is the primary trait of interest in maize breeding programmes. In our previous study, a major QTL (named qhkw5-3), which controls hundred-kernel weight, was identified and mapped to the interval between simple sequence repeat (SSR) markers SYM033 and SYM108 on chromosome 5, using an F2:3 population derived from a cross between the maize inbred line Zheng58 and the single-segment substitution line Z22. In order to fine map qhkw5-3, a larger BC1F1 segregating population of 14,759 seeds, derived from a (Z22 × Zheng58) × Z22 cross, was screened using the SSR markers SYM036 and SYM119. Forty genotypes with donor chromosomal fragments of different lengths were obtained. Progeny testing results indicated that qhkw5-3 was mapped to an interval of 442.6 kb between the SSR markers SYM077 and SYM084. Overlap mapping results, based on seven homozygous recombinant lines, showed that qhkw5-3 was narrowed down to an interval of 125.3 kb between the InDel markers InYM20 and InYM36. Within this interval, six candidate genes were analysed using qRT-PCR. The results of this study lay the foundations for cloning and functional analysis of qhkw5-3 and will contribute to advancing our knowledge of the genetic basis of yield traits in maize.
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Affiliation(s)
- Wenliang Li
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Qinghe Bai
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Weimin Zhan
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Chenyu Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Shunyou Wang
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yuanyuan Feng
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Mengdi Zhang
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Ying Zhu
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Ming Cheng
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zhangying Xi
- College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
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27
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The genome of cultivated peanut provides insight into legume karyotypes, polyploid evolution and crop domestication. Nat Genet 2019; 51:865-876. [PMID: 31043757 PMCID: PMC7188672 DOI: 10.1038/s41588-019-0402-2] [Citation(s) in RCA: 282] [Impact Index Per Article: 56.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 03/22/2019] [Indexed: 11/09/2022]
Abstract
High oil and protein content make tetraploid peanut a leading oil and food legume. Here we report a high-quality peanut genome sequence, comprising 2.54 Gb with 20 pseudomolecules and 83,709 protein-coding gene models. We characterize gene functional groups implicated in seed size evolution, seed oil content, disease resistance and symbiotic nitrogen fixation. The peanut B subgenome has more genes and general expression dominance, temporally associated with long-terminal-repeat expansion in the A subgenome that also raises questions about the A-genome progenitor. The polyploid genome provided insights into the evolution of Arachis hypogaea and other legume chromosomes. Resequencing of 52 accessions suggests that independent domestications formed peanut ecotypes. Whereas 0.42-0.47 million years ago (Ma) polyploidy constrained genetic variation, the peanut genome sequence aids mapping and candidate-gene discovery for traits such as seed size and color, foliar disease resistance and others, also providing a cornerstone for functional genomics and peanut improvement.
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Li N, Song D, Peng W, Zhan J, Shi J, Wang X, Liu G, Wang H. Maternal control of seed weight in rapeseed (Brassica napus L.): the causal link between the size of pod (mother, source) and seed (offspring, sink). PLANT BIOTECHNOLOGY JOURNAL 2019; 17:736-749. [PMID: 30191657 PMCID: PMC6419582 DOI: 10.1111/pbi.13011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 08/26/2018] [Accepted: 09/04/2018] [Indexed: 05/16/2023]
Abstract
Seed size/weight is one of the key traits related to plant domestication and crop improvement. In rapeseed (Brassica napus L.) germplasm, seed weight shows extensive variation, but its regulatory mechanism is poorly understood. To identify the key mechanism of seed weight regulation, a systematic comparative study was performed. Genetic, morphological and cytological evidence showed that seed weight was controlled by maternal genotype, through the regulation of seed size mainly via cell number. The physiological evidence indicated that differences in the pod length might result in differences in pod wall photosynthetic area, carbohydrates and the final seed weight. We also identified two pleiotropic major quantitative trait loci that acted indirectly on seed weight via their effects on pod length. RNA-seq results showed that genes related to pod development and hormones were significantly differentially expressed in the pod wall; genes related to development, cell division, nutrient reservoir and ribosomal proteins were all up-regulated in the seeds of the large-seed pool. Finally, we proposed a potential seed weight regulatory mechanism that is specific to rapeseed and novel in plants. The results demonstrate a causal link between the size of the pod (mother, source) and the seed (offspring, sink) in rapeseed, which provides novel insight into the maternal control of seed weight and will open a new research field in plants.
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Affiliation(s)
- Na Li
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
- Zhengzhou Fruit Research Institute of the Chinese Academy of Agricultural SciencesThe Laboratory of Melon CropsZhengzhouHenan ProvinceChina
| | - Dongji Song
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
| | - Wei Peng
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
| | - Jiepeng Zhan
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
| | - Jiaqin Shi
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
| | - Xinfa Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
| | - Guihua Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
| | - Hanzhong Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of AgricultureWuhanHubei ProvinceChina
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29
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Fine mapping and discovery of candidate genes for seed size in watermelon by genome survey sequencing. Sci Rep 2018; 8:17843. [PMID: 30552379 PMCID: PMC6294751 DOI: 10.1038/s41598-018-36104-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 11/14/2018] [Indexed: 01/08/2023] Open
Abstract
Fine mapping and discovery of candidate genes underlying seed size are important for modern watermelon breeding. Here, by using a high-resolution genetic map and whole-genome genetic variation detection aided by genome survey sequencing, we fine mapped and discovered candidate genes for seed size in watermelon. QTL (quantitative trait locus) mapping identified two pleiotropic QTLs for seed size, namely, qSS4 and qSS6, using a high-density genetic map constructed by specific length amplified fragment sequencing. qSS6 explained 93.00%, 94.11% and 95.26% of the phenotypic variation in thousand-seed weight, seed length and seed width, respectively, and was defined as a major QTL. Then, high-coverage re-sequencing of two parental lines detected a total of 193,395 SNPs (single nucleotide polymorphisms) and 45,065 indels (insertions/deletions), which corresponded to a frequency of 534 SNPs/Mb and 124 indels/Mb. Based on the genetic variation in the two parental lines, newly developed PCR-based markers allowed the region of qSS6 to be narrowed to 55.5 kb. Three potential candidates were identified, including a known seed size regulator in rice, SRS3. Taken together, our results reveal successful rapid fine mapping and discovery of candidate genes for seed size in watermelon, which could be applied to many traits of interest in plants.
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Castillo FM, Canales J, Claude A, Calderini DF. Expansin genes expression in growing ovaries and grains of sunflower are tissue-specific and associate with final grain weight. BMC PLANT BIOLOGY 2018; 18:327. [PMID: 30514222 PMCID: PMC6280438 DOI: 10.1186/s12870-018-1535-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 11/19/2018] [Indexed: 05/07/2023]
Abstract
BACKGROUND Grain weight (GW) is a key component of sunflower yield and quality, but may be limited by maternal tissues. Cell growth is influenced by expansin proteins that loosen the plant cell wall. This study aimed to identify spatio-temporal expression of EXPN genes in sunflower reproductive organ tissues (ovary, pericarp, and embryo) and evaluate correlations between reproductive organ growth and expansin genes expression. Evaluations involved eight different developmental stages, two genotypes, two source-sink treatments and two experiments. The genotypes evaluated are contrasting in GW (Alybro and confection variety RHA280) under two source-sink treatments (control and shaded) to study the interactions between grain growth and expansin genes expression. RESULTS Ovaries and grains were sampled at pre- and post-anthesis, respectively. Final GW differed between genotypes and shading treatments. Shading treatment decreased final GW by 16.4 and 19.5% in RHA280 and Alybro, respectively. Relative expression of eight expansin genes were evaluated in grain tissues. EXPN4 was the most abundant expansin in the ovary tissue, while EXPN10 and EXPN7 act predominantly in ovary and pericarp tissues, and EXPN1 and EXPN15 in the embryo tissues. CONCLUSIONS Specific expansin genes were expressed in ovary, pericarp and embryo in a tissue-specific manner. Differential expression among grain tissues was consistent between genotypes, source-sink treatments and experiments. The correlation analysis suggests that EXPN genes could be specifically involved in grain tissue extension, and their expression could be linked to grain size in sunflower.
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Affiliation(s)
- Francisca M. Castillo
- Graduate School, Faculty of Agricultural Sciences, Universidad Austral de Chile, Valdivia, Chile
- Plant Production and Plant Protection Institute, Faculty of Agricultural Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Javier Canales
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
- Millennium Institute for Integrative Biology (iBio), Santiago, Chile
| | - Alejandro Claude
- Institute of Biochemistry and Microbiology, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Daniel F. Calderini
- Plant Production and Plant Protection Institute, Faculty of Agricultural Sciences, Universidad Austral de Chile, Valdivia, Chile
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Ma J, Zhang D, Cao Y, Wang L, Li J, Lübberstedt T, Wang T, Li Y, Li H. Heterosis-related genes under different planting densities in maize. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:5077-5087. [PMID: 30085089 DOI: 10.1093/jxb/ery282] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 07/23/2018] [Indexed: 05/23/2023]
Abstract
Heterosis and increasing planting density have contributed to improving maize grain yield (GY) for several decades. As planting densities increase, the GY per plot also increases, whereas the contribution of heterosis to GY decreases. There are trade-offs between heterosis and planting density, and the transcriptional characterization of heterosis may explain the mechanism involved. In this study, 48 transcriptome libraries were sequenced from four inbred Chinese maize lines and their F1 hybrids. They were planted at densities of 45000 and 67500 plants ha-1. Maternal-effect differentially expressed genes (DEGs) played important roles in processes related to photosynthesis and carbohydrate biosynthesis and metabolism. Paternal-effect DEGs participated in abiotic/biotic stress response and plant hormone production under high planting density. Weighted gene co-expression network analysis revealed that high planting density induced heterosis-related genes regulating abiotic/biotic stress response, plant hormone biosynthesis, and ubiquitin-mediated proteolysis, but repressed other genes regulating energy formation. Under high planting density, maternal genes were mainly enriched in the photosynthesis reaction center, while paternal genes were mostly concentrated in the peripheral antenna system. Four important genes were identified in maize heterosis and high planting density, all with functions in photosynthesis, starch biosynthesis, auxin metabolism, gene silencing, and RNAi.
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Affiliation(s)
- Juan Ma
- Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, PR China
| | - Dengfeng Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Yanyong Cao
- Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, PR China
| | - Lifeng Wang
- Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, PR China
| | - Jingjing Li
- Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, PR China
| | | | - Tianyu Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Yu Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Huiyong Li
- Institute of Cereal Crops, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, PR China
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Worland B, Robinson N, Jordan D, Schmidt S, Godwin I. Post-anthesis nitrate uptake is critical to yield and grain protein content in Sorghum bicolor. JOURNAL OF PLANT PHYSIOLOGY 2017; 216:118-124. [PMID: 28609668 DOI: 10.1016/j.jplph.2017.05.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/30/2017] [Accepted: 05/31/2017] [Indexed: 06/07/2023]
Abstract
Crops only use ∼50% of applied nitrogen (N) fertilizer creating N losses and pollution. Plants need to efficiently uptake and utilize N to meet growing global food demands. Here we investigate how the supply and timing of nitrate affects N status and yield in Sorghum bicolor (sorghum). Sorghum was grown in pots with either 10mM (High) or 1mM (Low) nitrate supply. Shortly before anthesis the nitrate supply was either maintained, increased 10-fold or eliminated. Leaf sheaths of sorghum grown with High nitrate accumulated nitrate in concentrations >3-times higher than leaves. Removal of nitrate supply pre-anthesis resulted in the rapid reduction of stored nitrate in all organs. Plants receiving a 10-fold increase in nitrate supply pre-anthesis achieved similar grain yield and protein content and 29% larger grains than those maintained on High nitrate, despite receiving 24% less nitrate over the whole growth period. In sorghum, plant available N is important throughout development, particularly anthesis and grain filling, for grain yield and grain protein content. Nitrate accumulation in leaf sheaths presents opportunities for the genetic analysis of mechanisms behind nitrate storage and remobilization in sorghum to improve N use efficiency.
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Affiliation(s)
- Belinda Worland
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia.
| | - Nicole Robinson
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - David Jordan
- Department of Agriculture and Fisheries (DAF), Warwick, Queensland 4370, Australia; Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Warwick, Queensland 4370, Australia
| | - Susanne Schmidt
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Ian Godwin
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia; Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Warwick, Queensland 4370, Australia
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Wang J, Tang M, Chen S, Zheng X, Mo H, Li S, Wang Z, Zhu K, Ding L, Liu S, Li Y, Tan X. Down-regulation of BnDA1, whose gene locus is associated with the seeds weight, improves the seeds weight and organ size in Brassica napus. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:1024-1033. [PMID: 28097785 PMCID: PMC5506660 DOI: 10.1111/pbi.12696] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 01/11/2017] [Accepted: 01/11/2017] [Indexed: 05/03/2023]
Abstract
Brassica napus L. is an important oil crop worldwide and is the main raw material for biofuel. Seed weight and seed size are the main contributors to seed yield. DA1 (DA means big in Chinese) is an ubiquitin receptor and negatively regulates seed size. Down-regulation of AtDA1 in Arabidopsis leads to larger seeds and organs by increasing cell proliferation in integuments. In this study, BnDA1 was down-regulated in B. napus by over expressed of AtDA1R358K , which is a functional deficiency of DA1 with an arginine-to-lysine mutation at the 358th amino acid. The results showed that the biomass and size of the seeds, cotyledons, leaves, flowers and siliques of transgenic plants all increased significantly. In particular, the 1000 seed weight increased 21.23% and the seed yield per plant increased 13.22% in field condition. The transgenic plants had no negative traits related to yield. The candidate gene association analysis demonstrated that the BnDA1 locus was contributed to the seeds weight. Therefore, our study showed that regulation of DA1 in B. napus can increase the seed yield and biomass, and DA1 is a promising target for crop improvement.
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Affiliation(s)
- Jie‐Li Wang
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
| | - Min‐Qiang Tang
- The Oil Crops Research Institute (OCRI) of the Chinese Academy of Agricultural Sciences (CAAS)WuhanChina
| | - Sheng Chen
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
| | | | - Hui‐Xian Mo
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental Biology (IGDB)Chinese Academy of Sciences (CAS)BeijingChina
| | - Sheng‐Jun Li
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental Biology (IGDB)Chinese Academy of Sciences (CAS)BeijingChina
| | - Zheng Wang
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
| | - Ke‐Ming Zhu
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
| | - Li‐Na Ding
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
| | - Sheng‐Yi Liu
- The Oil Crops Research Institute (OCRI) of the Chinese Academy of Agricultural Sciences (CAAS)WuhanChina
| | - Yun‐Hai Li
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental Biology (IGDB)Chinese Academy of Sciences (CAS)BeijingChina
| | - Xiao‐Li Tan
- Institute of Life SciencesJiangsu UniversityZhenjiangChina
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Zhang H, Cheng F, Xiao Y, Kang X, Wang X, Kuang R, Ni M. Global analysis of canola genes targeted by SHORT HYPOCOTYL UNDER BLUE 1 during endosperm and embryo development. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 91:158-171. [PMID: 28332746 DOI: 10.1111/tpj.13542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 03/13/2017] [Indexed: 06/06/2023]
Abstract
Seed development in dicots includes early endosperm proliferation followed by growth of the embryo to replace the endosperm. Endosperm proliferation in dicots not only provides nutrient supplies for subsequent embryo development but also enforces a space limitation, influencing final seed size. Overexpression of Arabidopsis SHORT HYPOCOTYL UNDER BLUE1::uidA (SHB1:uidA) in canola produces large seeds. We performed global analysis of the canola genes that were expressed and influenced by SHB1 during early endosperm proliferation at 8 days after pollination (DAP) and late embryo development at 13 DAP. Overexpression of SHB1 altered the expression of 973 genes at 8 DAP and 1035 genes at 13 DAP. We also surveyed the global SHB1 association sites, and merging of these sites with the RNA sequencing data identified a set of canola genes targeted by SHB1. The 8-DAP list includes positive and negative genes that influence endosperm proliferation and are homologous to Arabidopsis MINI3, IKU2, SHB1, AGL62, FIE and AP2. We revealed a major role for SHB1 in canola endosperm development based on the dynamics of SHB1-altered gene expression, the magnitude of SHB1 chromatin immunoprecipitation enrichment and the over-representation of eight regulatory genes for endosperm development. Our studies focus on an important agronomic trait in a major crop for global agriculture. The datasets on stage-specific and SHB1-induced gene expression and genes targeted by SHB1 also provide a useful resource in the field of endosperm development and seed size engineering. Our practices in an allotetraploid species will impact similar studies in other crop species.
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Affiliation(s)
- Huanan Zhang
- Department of Computer Science and Engineering, University of Minnesota at Twin Cities, Minneapolis, MN, 55455, USA
| | - Feng Cheng
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yuguo Xiao
- Department of Plant Biology, University of Minnesota at Twin Cities, Saint Paul, MN, 55108, USA
| | - Xiaojun Kang
- Department of Plant Biology, University of Minnesota at Twin Cities, Saint Paul, MN, 55108, USA
| | - Xiaowu Wang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Rui Kuang
- Department of Computer Science and Engineering, University of Minnesota at Twin Cities, Minneapolis, MN, 55455, USA
| | - Min Ni
- Department of Plant Biology, University of Minnesota at Twin Cities, Saint Paul, MN, 55108, USA
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Nadolska-Orczyk A, Rajchel IK, Orczyk W, Gasparis S. Major genes determining yield-related traits in wheat and barley. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2017; 130:1081-1098. [PMID: 28314933 PMCID: PMC5440550 DOI: 10.1007/s00122-017-2880-x] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 02/17/2017] [Indexed: 05/20/2023]
Abstract
Current development of advanced biotechnology tools allows us to characterize the role of key genes in plant productivity. The implementation of this knowledge in breeding strategies might accelerate the progress in obtaining high-yielding cultivars. The achievements of the Green Revolution were based on a specific plant ideotype, determined by a single gene involved in gibberellin signaling or metabolism. Compared with the 1950s, an enormous increase in our knowledge about the biological basis of plant productivity has opened new avenues for novel breeding strategies. The large and complex genomes of diploid barley and hexaploid wheat represent a great challenge, but they also offer a large reservoir of genes that can be targeted for breeding. We summarize examples of productivity-related genes/mutants in wheat and barley, identified or characterized by means of modern biology. The genes are classified functionally into several groups, including the following: (1) transcription factors, regulating spike development, which mainly affect grain number; (2) genes involved in metabolism or signaling of growth regulators-cytokinins, gibberellins, and brassinosteroids-which control plant architecture and in consequence stem hardiness and grain yield; (3) genes determining cell division and proliferation mainly impacting grain size; (4) floral regulators influencing inflorescence architecture and in consequence seed number; and (5) genes involved in carbohydrate metabolism having an impact on plant architecture and grain yield. The implementation of selected genes in breeding programs is discussed, considering specific genotypes, agronomic and climate conditions, and taking into account that many of the genes are members of multigene families.
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Affiliation(s)
- Anna Nadolska-Orczyk
- Department of Functional Genomics, Plant Breeding and Acclimatization Institute - National Research Institute, Radzikow, 05-870, Blonie, Poland.
| | - Izabela K Rajchel
- Department of Functional Genomics, Plant Breeding and Acclimatization Institute - National Research Institute, Radzikow, 05-870, Blonie, Poland
| | - Wacław Orczyk
- Department of Genetic Engineering, Plant Breeding and Acclimatization Institute - National Research Institute, Radzikow, 05-870, Blonie, Poland
| | - Sebastian Gasparis
- Department of Functional Genomics, Plant Breeding and Acclimatization Institute - National Research Institute, Radzikow, 05-870, Blonie, Poland
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Zhao P, Zhang J, Qian C, Zhou Q, Zhao X, Chen G, Ma XF. SNP Discovery and Genetic Variation of Candidate Genes Relevant to Heat Tolerance and Agronomic Traits in Natural Populations of Sand Rice ( Agriophyllum squarrosum). FRONTIERS IN PLANT SCIENCE 2017; 8:536. [PMID: 28439286 PMCID: PMC5383723 DOI: 10.3389/fpls.2017.00536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/27/2017] [Indexed: 05/24/2023]
Abstract
The extreme stress tolerance and high nutritional value of sand rice (Agriophyllum squarrosum) make it attractive for use as an alternative crop in response to concerns about ongoing climate change and future food security. However, a lack of genetic information hinders understanding of the mechanisms underpinning the morphological and physiological adaptations of sand rice. In the present study, we sequenced and analyzed the transcriptomes of two individuals representing semi-arid [Naiman (NM)] and arid [Shapotou (SPT)] sand rice genotypes. A total of 105,868 pairwise single nucleotide polymorphisms (SNPs) distributed in 24,712 Unigenes were identified among SPT and NM samples; the average SNP frequency was 0.3% (one SNP per 333 base pair). Characterization of gene annotation demonstrated that variations in genes involved in DNA recombination were associated with the survival of the NM population in the semi-arid environment. A set of genes predicted to be relevant to heat stress response and agronomic traits was functionally annotated using the accumulated knowledge from Arabidopsis and several crop plants, including rice, barley, maize, and sorghum. Four candidate genes related to heat tolerance (heat-shock transcription factor, HsfA1d), seed size (DA1-Related, DAR1), and flowering (early flowering 3, ELF3 and late elongated hypocotyl, LHY) were subjected to analysis of the genetic diversity in 10 natural populations, representing the core germplasm resource across the area of sand rice distribution in China. Only one SNP was detected in each of HsfA1d and DAR1, among 60 genotypes, with two in ELF3 and four in LHY. Nucleotide diversity ranged from 0.00032 to 0.00118. Haplotype analysis indicated that the NM population carried a specific allele for all four genes, suggesting that divergence has occurred between NM and other populations. These four genes could be further analyzed to determine whether they are associated with phenotype variation and identify alleles favorable for sand rice breeding.
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Affiliation(s)
- Pengshan Zhao
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
| | - Jiwei Zhang
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
| | - Chaoju Qian
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
| | - Qin Zhou
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
| | - Xin Zhao
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
| | - Guoxiong Chen
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
- Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
| | - Xiao-Fei Ma
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of SciencesLanzhou, China
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Pavan S, Marcotrigiano AR, Ciani E, Mazzeo R, Zonno V, Ruggieri V, Lotti C, Ricciardi L. Genotyping-by-sequencing of a melon (Cucumis melo L.) germplasm collection from a secondary center of diversity highlights patterns of genetic variation and genomic features of different gene pools. BMC Genomics 2017; 18:59. [PMID: 28068911 PMCID: PMC5223370 DOI: 10.1186/s12864-016-3429-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 12/16/2016] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Melon (Cucumis melo L.) is one of the most important horticultural species, which includes several taxonomic groups. With the advent of next-generation sequencing, single nucleotide polymorphism (SNP) markers are widely used in the study of genetic diversity and genomics. RESULTS We report the first successful application of genotyping-by-sequencing (GBS) technology in melon. We detected 25,422 SNPs by the analysis of 72 accessions collected in Apulia, a secondary centre of diversity in Southern Italy. Analyses of genetic structure, principal components, and hierarchical clustering support the identification of three distinct subpopulations. One of them includes accessions known with the folk name of 'carosello', referable to the chate taxonomic group. This is one of the oldest domesticated forms of C. melo, once widespread in Europe and now exposed to the risk of genetic erosion. The second subpopulation contains landraces of 'barattiere', a regional vegetable production that was never characterized at the DNA level and we show was erroneously considered another form of chate melon. The third subpopulation includes genotypes of winter melon (C. melo var. inodorus). Genetic analysis within each subpopulation revealed patterns of diversity associated with fruit phenotype and geographical origin. We used SNP data to describe, for each subpopulation, the average linkage disequilibrium (LD) decay, and to highlight genomic regions possibly resulting from directional selection and associated with phenotypic variation. CONCLUSIONS We used GBS to characterize patterns of genetic diversity and genomic features within C. melo. We provide useful information to preserve endangered gene pools and to guide the use of germplasm in breeding. Finally, our findings lay a foundation for molecular breeding approaches and the identification of genes underlying phenotypic traits.
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Affiliation(s)
- Stefano Pavan
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro", Via Amendola 165/A, 70126, Bari, Italy.
| | | | - Elena Ciani
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Via Amendola 165/A, 70126, Bari, Italy
| | - Rosa Mazzeo
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro", Via Amendola 165/A, 70126, Bari, Italy
| | - Vito Zonno
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro", Via Amendola 165/A, 70126, Bari, Italy
| | | | - Concetta Lotti
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, via Napoli 25, I-71100, Foggia, Italy
| | - Luigi Ricciardi
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro", Via Amendola 165/A, 70126, Bari, Italy
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Gayin J, Abdel-Aal ESM, Manful J, Bertoft E, Marcone M, Ragaee S. Physical, cooking and thermal properties of African rice (Oryza glaberrima) and its starch digestibility in vitro. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.09.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wendt T, Holme I, Dockter C, Preuß A, Thomas W, Druka A, Waugh R, Hansson M, Braumann I. HvDep1 Is a Positive Regulator of Culm Elongation and Grain Size in Barley and Impacts Yield in an Environment-Dependent Manner. PLoS One 2016; 11:e0168924. [PMID: 28005988 PMCID: PMC5179111 DOI: 10.1371/journal.pone.0168924] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 12/08/2016] [Indexed: 11/19/2022] Open
Abstract
Heterotrimeric G proteins are intracellular membrane-attached signal transducers involved in various cellular processes in both plants and animals. They consist of three subunits denoted as α, β and γ. The γ-subunits of the so-called AGG3 type, which comprise a transmembrane domain, are exclusively found in plants. In model species, these proteins have been shown to participate in the control of plant height, branching and seed size and could therefore impact the harvestable yield of various crop plants. Whether AGG3-type γ-subunits influence yield in temperate cereals like barley and wheat remains unknown. Using a transgenic complementation approach, we show here that the Scottish malting barley cultivar (cv.) Golden Promise carries a loss-of-function mutation in HvDep1, an AGG3-type subunit encoding gene that positively regulates culm elongation and seed size in barley. Somewhat intriguingly, agronomic field data collected over a 12-year period reveals that the HvDep1 loss-of-function mutation in cv. Golden Promise has the potential to confer either a significant increase or decrease in harvestable yield depending on the environment. Our results confirm the role of AGG3-type subunit-encoding genes in shaping plant architecture, but interestingly also indicate that the impact HvDep1 has on yield in barley is both genotypically and environmentally sensitive. This may explain why widespread exploitation of variation in AGG3-type subunit-encoding genes has not occurred in temperate cereals while in rice the DEP1 locus is widely exploited to improve harvestable yield.
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Affiliation(s)
- Toni Wendt
- Carlsberg Research Laboratory, Copenhagen, Denmark
| | - Inger Holme
- Department of Molecular Biology and Genetics, Faculty of Science and Technology, Aarhus University, Slagelse, Denmark
| | | | - Aileen Preuß
- Carlsberg Research Laboratory, Copenhagen, Denmark
| | - William Thomas
- James Hutton Institute, Invergowrie, Dundee, United Kingdom
| | - Arnis Druka
- James Hutton Institute, Invergowrie, Dundee, United Kingdom
| | - Robbie Waugh
- James Hutton Institute, Invergowrie, Dundee, United Kingdom
- Division of Plant Sciences, The University of Dundee, Invergowrie, Dundee, United Kingdom
| | - Mats Hansson
- Department of Biology, Lund University, Lund, Sweden
| | - Ilka Braumann
- Carlsberg Research Laboratory, Copenhagen, Denmark
- * E-mail:
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40
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Chen L, Li YX, Li C, Wu X, Qin W, Li X, Jiao F, Zhang X, Zhang D, Shi Y, Song Y, Li Y, Wang T. Fine-mapping of qGW4.05, a major QTL for kernel weight and size in maize. BMC PLANT BIOLOGY 2016; 16:81. [PMID: 27068015 PMCID: PMC4828868 DOI: 10.1186/s12870-016-0768-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 04/06/2016] [Indexed: 05/05/2023]
Abstract
BACKGROUND Kernel weight and size are important components of grain yield in cereals. Although some information is available concerning the map positions of quantitative trait loci (QTL) for kernel weight and size in maize, little is known about the molecular mechanisms of these QTLs. qGW4.05 is a major QTL that is associated with kernel weight and size in maize. We combined linkage analysis and association mapping to fine-map and identify candidate gene(s) at qGW4.05. RESULTS QTL qGW4.05 was fine-mapped to a 279.6-kb interval in a segregating population derived from a cross of Huangzaosi with LV28. By combining the results of regional association mapping and linkage analysis, we identified GRMZM2G039934 as a candidate gene responsible for qGW4.05. Candidate gene-based association mapping was conducted using a panel of 184 inbred lines with variable kernel weights and kernel sizes. Six polymorphic sites in the gene GRMZM2G039934 were significantly associated with kernel weight and kernel size. CONCLUSION The results of linkage analysis and association mapping revealed that GRMZM2G039934 is the most likely candidate gene for qGW4.05. These results will improve our understanding of the genetic architecture and molecular mechanisms underlying kernel development in maize.
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Affiliation(s)
- Lin Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Yong-xiang Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Chunhui Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Xun Wu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Weiwei Qin
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Xin Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Fuchao Jiao
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Xiaojing Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Dengfeng Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Yunsu Shi
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Yanchun Song
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Yu Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
| | - Tianyu Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Beijing, 100081 China
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Zhang X, Hirsch CN, Sekhon RS, de Leon N, Kaeppler SM. Evidence for maternal control of seed size in maize from phenotypic and transcriptional analysis. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:1907-17. [PMID: 26826570 PMCID: PMC4783370 DOI: 10.1093/jxb/erw006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Seed size is an important component of grain yield and a key determinant trait for crop domestication. The Krug Yellow Dent long-term selection experiment for large and small seed provides a valuable resource to dissect genetic and phenotypic changes affecting seed size within a common genetic background. In this study, inbred lines derived from Krug Large Seed (KLS) and Krug Small Seed (KSS) populations and reciprocal F1 crosses were used to investigate developmental and molecular mechanisms governing seed size. Seed morphological characteristics showed striking differences between KLS and KSS inbred lines, and the reciprocal cross experiment revealed a strong maternal influence on both seed weight and seed size. Quantification of endosperm area, starchy endosperm cell size, and kernel dry mass accumulation indicated a positive correlation between seed size, endosperm cell number, and grain filling rate, and patterns of grain filling in reciprocal crosses mirrored that of the maternal parent. Consistent with the maternal contribution to seed weight, transcriptome profiling of reciprocal F1 hybrids showed substantial similarities to the maternal parent. A set of differentially expressed genes between KLS and KSS inbreds were found, which fell into a broad number of functional categories including DNA methylation, nucleosome assembly, and heat stress response. In addition, gene co-expression network analysis of parental inbreds and reciprocal F1 hybrids identified co-expression modules enriched in ovule development and DNA methylation, implicating these two processes in seed size determination. These results expand our understanding of seed size regulation and help to uncover the developmental and molecular basis underlying maternal control of seed size in maize.
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Affiliation(s)
- Xia Zhang
- Department of Agronomy, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA
| | - Candice N Hirsch
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA
| | - Rajandeep S Sekhon
- Department of Genetics and Biochemistry, Clemson University, Clemson, SC 29634, USA
| | - Natalia de Leon
- Department of Agronomy, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA
| | - Shawn M Kaeppler
- Department of Agronomy, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, 1575 Linden Drive, Madison, WI 53706, USA
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42
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Xiao YG, Sun QB, Kang XJ, Chen CB, Ni M. SHORT HYPOCOTYL UNDER BLUE1 or HAIKU2 mixepression alters canola and Arabidopsis seed development. THE NEW PHYTOLOGIST 2016; 209:636-649. [PMID: 26389843 DOI: 10.1111/nph.13632] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 08/04/2015] [Indexed: 05/28/2023]
Abstract
Canola (Brassica napus) is a widely cultivated species and provides important resources of edible vegetable oil, biodiesel production and animal feed. Seed development in Arabidopsis and canola shares a similar path: an early proliferation of endosperm to form a large seed cavity, followed by a second phase in which the embryo grows to replace the endosperm. In Arabidopsis, the seed reaches almost its final volume before the enlargement of the embryo. SHORT HYPOCOTYL UNDER BLUE1 (SHB1) is a key regulatory gene of seed development with a broad expression beyond endosperm development. By contrast, its two target genes, MINISEED3 (MINI3) and HAIKU2 (IKU2), are narrowly expressed in early developing endosperm and early embryo. We overexpressed SHB1 in canola to explore the possibility of altering seed development. As an alternative strategy, we expressed the canola IKU2 ortholog in Arabidopsis endosperm under the control of a stronger MINI3 promoter. SHB1 targeted canola orthologs of Arabidopsis MINI3 and IKU2 and caused a significantly increased seed mass. Overaccumulation of IKU2 in the early stage of Arabidopsis seed development also significantly increased the final seed mass. Our studies provide a strong case for increasing the final seed mass by manipulating endosperm proliferation at a rather early developmental stage in crops.
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Affiliation(s)
- Yu-Guo Xiao
- Department of Plant Biology, University of Minnesota at Twin Cities, St Paul, MN, 55108, USA
| | - Qing-Bin Sun
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Xiao-Jun Kang
- Department of Plant Biology, University of Minnesota at Twin Cities, St Paul, MN, 55108, USA
| | - Chang-Bin Chen
- Department of Horticultural Sciences, University of Minnesota at Twin Cities, St Paul, MN, 55108, USA
| | - Min Ni
- Department of Plant Biology, University of Minnesota at Twin Cities, St Paul, MN, 55108, USA
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43
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An integrated network of Arabidopsis growth regulators and its use for gene prioritization. Sci Rep 2015; 5:17617. [PMID: 26620795 PMCID: PMC4664945 DOI: 10.1038/srep17617] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 11/03/2015] [Indexed: 11/09/2022] Open
Abstract
Elucidating the molecular mechanisms that govern plant growth has been an important topic in plant research, and current advances in large-scale data generation call for computational tools that efficiently combine these different data sources to generate novel hypotheses. In this work, we present a novel, integrated network that combines multiple large-scale data sources to characterize growth regulatory genes in Arabidopsis, one of the main plant model organisms. The contributions of this work are twofold: first, we characterized a set of carefully selected growth regulators with respect to their connectivity patterns in the integrated network, and, subsequently, we explored to which extent these connectivity patterns can be used to suggest new growth regulators. Using a large-scale comparative study, we designed new supervised machine learning methods to prioritize growth regulators. Our results show that these methods significantly improve current state-of-the-art prioritization techniques, and are able to suggest meaningful new growth regulators. In addition, the integrated network is made available to the scientific community, providing a rich data source that will be useful for many biological processes, not necessarily restricted to plant growth.
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Sornay E, Forzani C, Forero-Vargas M, Dewitte W, Murray JAH. Activation of CYCD7;1 in the central cell and early endosperm overcomes cell-cycle arrest in the Arabidopsis female gametophyte, and promotes early endosperm and embryo development. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 84:41-55. [PMID: 26261067 PMCID: PMC5102630 DOI: 10.1111/tpj.12957] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 07/15/2015] [Accepted: 07/17/2015] [Indexed: 05/27/2023]
Abstract
In angiosperms, double fertilization of the egg and central cell of the megagametophyte leads to the development of the embryo and endosperm, respectively. Control of cell cycle progression in the megagametophyte is essential for successful fertilization and development. Central cell-targeted expression of the D-type cyclin CYCD7;1 (end CYCD7;1) using the imprinted FWA promoter overcomes cycle arrest of the central cell in the Arabidopsis female gametophyte in the unfertilized ovule, leading to multinucleate central cells at high frequency. Unlike FERTILIZATION-INDEPENDENT SEED (fis) mutants, but similar to lethal RETINOBLASTOMA-RELATED (rbr) mutants, no seed coat development is triggered. Unlike the case with loss of rbr, post-fertilization end CYCD7;1 in the endosperm enhances the number of nuclei during syncytial endosperm development and induces the partial abortion of developing seeds, associated with the enhanced size of the surviving seeds. The frequency of lethality was less than the frequency of multinucleate central cells, indicating that these aspects are not causally linked. These larger seeds contain larger embryos composed of more cells of wild-type size, surrounded by a seed coat composed of more cells. Seedlings arising from these larger seeds displayed faster seedling establishment and early growth. Similarly, two different embryo-lethal mutants also conferred enlarged seed size in surviving siblings, consistent with seed size increase being a general response to sibling lethality, although the cellular mechanisms were found to be distinct. Our data suggest that tight control of CYCD activity in the central cell and in the developing endosperm is required for optimal seed formation.
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Affiliation(s)
- Emily Sornay
- Cardiff School Biosciences, Cardiff University, Sir Martin Evans building, Museum Avenue, Cardiff, CF10 3AX, Wales, UK
| | - Céline Forzani
- Cardiff School Biosciences, Cardiff University, Sir Martin Evans building, Museum Avenue, Cardiff, CF10 3AX, Wales, UK
- Institut Jean-Pierre Bourgin, INRA Centre de Versailles-Grignon, Route de Saint-Cyr, 78026, Versailles, Cedex, France
| | - Manuel Forero-Vargas
- Cardiff School Biosciences, Cardiff University, Sir Martin Evans building, Museum Avenue, Cardiff, CF10 3AX, Wales, UK
- Facultad de Ingenieria, Universidad de Ibagué, Calle Barrio Ambalá, Ibagué, 730002, Colombia
| | - Walter Dewitte
- Cardiff School Biosciences, Cardiff University, Sir Martin Evans building, Museum Avenue, Cardiff, CF10 3AX, Wales, UK
| | - James A H Murray
- Cardiff School Biosciences, Cardiff University, Sir Martin Evans building, Museum Avenue, Cardiff, CF10 3AX, Wales, UK
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45
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Orozco-Arroyo G, Paolo D, Ezquer I, Colombo L. Networks controlling seed size in Arabidopsis. PLANT REPRODUCTION 2015; 28:17-32. [PMID: 25656951 DOI: 10.1007/s00497-015-0255-5] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 01/16/2015] [Indexed: 05/07/2023]
Abstract
Key message: Overview of seed size control. Human and livestock nutrition is largely based on calories derived from seeds, in particular cereals and legumes. Unveiling the control of seed size is therefore of remarkable importance in the frame of developing new strategies for crop improvement. The networks controlling the development of the seed coat, the endosperm and the embryo, as well as their interplay, have been described in Arabidopsis thaliana. In this review, we provide a comprehensive description of the current knowledge regarding the molecular mechanisms controlling seed size in Arabidopsis.
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Affiliation(s)
- Gregorio Orozco-Arroyo
- Dipartimento di BioScienze, Università degli Studi di Milano, Via Giovanni Celoria 26, 20133, Milan, Italy
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46
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Abstract
Seed size is a key determinant of evolutionary fitness, and is also one of the most important components of seed yield. In angiosperms, seed development begins with double fertilization, which leads to the formation of a diploid embryo and a triploid endosperm. The outermost layer of the seed is the seed coat, which differentiates from maternal integuments. Therefore, the size of a seed is determined by the co-ordinated growth of the embryo, endosperm, and maternal tissue. Recent studies have identified several factors that act maternally or zygotically to regulate seed size, and revealed possible mechanisms that underlie seed size control in Arabidopsis and rice. In this review, we summarize current research progress in maternal control of seed size and discuss the roles of several newly identified regulators in maternal regulation of seed growth.
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Affiliation(s)
- Na Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yunhai Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
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47
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The genetic basis of natural variation in seed size and seed number and their trade-off using Arabidopsis thaliana MAGIC lines. Genetics 2014; 198:1751-8. [PMID: 25313128 DOI: 10.1534/genetics.114.170746] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Offspring number and size are key traits determining an individual's fitness and a crop's yield. Yet, extensive natural variation within species is observed for these traits. Such variation is typically explained by trade-offs between fecundity and quality, for which an optimal solution is environmentally dependent. Understanding the genetic basis of seed size and number, as well as any possible genetic constraints preventing the maximization of both, is crucial from both an evolutionary and applied perspective. We investigated the genetic basis of natural variation in seed size and number using a set of Arabidopsis thaliana multiparent advanced generation intercross (MAGIC) lines. We also tested whether life history affects seed size, number, and their trade-off. We found that both seed size and seed number are affected by a large number of mostly nonoverlapping QTL, suggesting that seed size and seed number can evolve independently. The allele that increases seed size at most identified QTL is from the same natural accession, indicating past occurrence of directional selection for seed size. Although a significant trade-off between seed size and number is observed, its expression depends on life-history characteristics, and generally explains little variance. We conclude that the trade-off between seed size and number might have a minor role in explaining the maintenance of variation in seed size and number, and that seed size could be a valid target for selection.
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48
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Abstract
Grain produced from cereal crops is a primary source of human food and animal feed worldwide. To understand the genetic basis of seed-size variation, a grain yield component, we conducted a genome-wide scan to detect evidence of selection in the maize Krug Yellow Dent long-term divergent seed-size selection experiment. Previous studies have documented significant phenotypic divergence between the populations. Allele frequency estimates for ∼3 million single nucleotide polymorphisms (SNPs) in the base population and selected populations were estimated from pooled whole-genome resequencing of 48 individuals per population. Using FST values across sliding windows, 94 divergent regions with a median of six genes per region were identified. Additionally, 2729 SNPs that reached fixation in both selected populations with opposing fixed alleles were identified, many of which clustered in two regions of the genome. Copy-number variation was highly prevalent between the selected populations, with 532 total regions identified on the basis of read-depth variation and comparative genome hybridization. Regions important for seed weight in natural variation were identified in the maize nested association mapping population. However, the number of regions that overlapped with the long-term selection experiment did not exceed that expected by chance, possibly indicating unique sources of variation between the two populations. The results of this study provide insights into the genetic elements underlying seed-size variation in maize and could also have applications for other cereal crops.
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49
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Schmutz J, McClean PE, Mamidi S, Wu GA, Cannon SB, Grimwood J, Jenkins J, Shu S, Song Q, Chavarro C, Torres-Torres M, Geffroy V, Moghaddam SM, Gao D, Abernathy B, Barry K, Blair M, Brick MA, Chovatia M, Gepts P, Goodstein DM, Gonzales M, Hellsten U, Hyten DL, Jia G, Kelly JD, Kudrna D, Lee R, Richard MMS, Miklas PN, Osorno JM, Rodrigues J, Thareau V, Urrea CA, Wang M, Yu Y, Zhang M, Wing RA, Cregan PB, Rokhsar DS, Jackson SA. A reference genome for common bean and genome-wide analysis of dual domestications. Nat Genet 2014; 46:707-13. [PMID: 24908249 PMCID: PMC7048698 DOI: 10.1038/ng.3008] [Citation(s) in RCA: 690] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 05/15/2014] [Indexed: 01/13/2023]
Abstract
Common bean (Phaseolus vulgaris L.) is the most important grain legume for human consumption and has a role in sustainable agriculture owing to its ability to fix atmospheric nitrogen. We assembled 473 Mb of the 587-Mb genome and genetically anchored 98% of this sequence in 11 chromosome-scale pseudomolecules. We compared the genome for the common bean against the soybean genome to find changes in soybean resulting from polyploidy. Using resequencing of 60 wild individuals and 100 landraces from the genetically differentiated Mesoamerican and Andean gene pools, we confirmed 2 independent domestications from genetic pools that diverged before human colonization. Less than 10% of the 74 Mb of sequence putatively involved in domestication was shared by the two domestication events. We identified a set of genes linked with increased leaf and seed size and combined these results with quantitative trait locus data from Mesoamerican cultivars. Genes affected by domestication may be useful for genomics-enabled crop improvement.
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Affiliation(s)
- Jeremy Schmutz
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama USA
| | - Phillip E McClean
- Department of Plant Sciences, North Dakota State University, Fargo, North Dakota USA
| | - Sujan Mamidi
- Department of Plant Sciences, North Dakota State University, Fargo, North Dakota USA
| | - G Albert Wu
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Steven B Cannon
- US Department of Agriculture–Agricultural Research Service, Corn Insects and Crop Genetics Research Unit, Ames, Iowa USA
| | - Jane Grimwood
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama USA
| | - Jerry Jenkins
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama USA
| | - Shengqiang Shu
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Qijian Song
- US Department of Agriculture–Agricultural Research Service, Soybean Genomics and Improvement Laboratory, Beltsville, Maryland USA
| | - Carolina Chavarro
- Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia USA
| | | | - Valerie Geffroy
- CNRS, Université Paris–Sud, Institut de Biologie des Plantes, UMR 8618, Saclay Plant Sciences (SPS), Orsay, France
- Institut National de la Recherche Agronomique (INRA), Université Paris–Sud, Unité Mixte de Recherche de Génétique Végétale, Gif-sur-Yvette, France
| | - Samira Mafi Moghaddam
- Department of Plant Sciences, North Dakota State University, Fargo, North Dakota USA
| | - Dongying Gao
- Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia USA
| | - Brian Abernathy
- Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia USA
| | - Kerrie Barry
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Matthew Blair
- Department of Agricultural and Natural Sciences, Tennessee State University, Nashville, Tennessee USA
| | - Mark A Brick
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, Colorado USA
| | - Mansi Chovatia
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Paul Gepts
- Department of Plant Sciences, University of California, Davis, Davis, California USA
| | - David M Goodstein
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Michael Gonzales
- Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia USA
| | - Uffe Hellsten
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - David L Hyten
- US Department of Agriculture–Agricultural Research Service, Soybean Genomics and Improvement Laboratory, Beltsville, Maryland USA
- Present Address: Present addresses: Pioneer Hi-Bred International, Inc., Johnston, Iowa, USA (D.L.H.) and Genética e Melhoramento, Federal University of Viçosa, Viçosa, Brazil (J.R.).,
| | - Gaofeng Jia
- US Department of Agriculture–Agricultural Research Service, Soybean Genomics and Improvement Laboratory, Beltsville, Maryland USA
| | - James D Kelly
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan USA
| | - Dave Kudrna
- Arizona Genomics Institute, University of Arizona, Tucson, Arizona USA
| | - Rian Lee
- Department of Plant Sciences, North Dakota State University, Fargo, North Dakota USA
| | - Manon M S Richard
- CNRS, Université Paris–Sud, Institut de Biologie des Plantes, UMR 8618, Saclay Plant Sciences (SPS), Orsay, France
| | - Phillip N Miklas
- US Department of Agriculture–Agricultural Research Service, Vegetable and Forage Crop Research Unit, Prosser, Washington USA
| | - Juan M Osorno
- Department of Plant Sciences, North Dakota State University, Fargo, North Dakota USA
| | - Josiane Rodrigues
- US Department of Agriculture–Agricultural Research Service, Soybean Genomics and Improvement Laboratory, Beltsville, Maryland USA
- Present Address: Present addresses: Pioneer Hi-Bred International, Inc., Johnston, Iowa, USA (D.L.H.) and Genética e Melhoramento, Federal University of Viçosa, Viçosa, Brazil (J.R.).,
| | - Vincent Thareau
- CNRS, Université Paris–Sud, Institut de Biologie des Plantes, UMR 8618, Saclay Plant Sciences (SPS), Orsay, France
| | - Carlos A Urrea
- Panhandle Research and Extension Center, University of Nebraska, Scottsbluff, Nebraska USA
| | - Mei Wang
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Yeisoo Yu
- Arizona Genomics Institute, University of Arizona, Tucson, Arizona USA
| | - Ming Zhang
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Rod A Wing
- Arizona Genomics Institute, University of Arizona, Tucson, Arizona USA
| | - Perry B Cregan
- US Department of Agriculture–Agricultural Research Service, Soybean Genomics and Improvement Laboratory, Beltsville, Maryland USA
| | - Daniel S Rokhsar
- US Department of Energy Joint Genome Institute, Walnut Creek, California USA
| | - Scott A Jackson
- Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia USA
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50
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Liu YF, Li QT, Lu X, Song QX, Lam SM, Zhang WK, Ma B, Lin Q, Man WQ, Du WG, Shui GH, Chen SY, Zhang JS. Soybean GmMYB73 promotes lipid accumulation in transgenic plants. BMC PLANT BIOLOGY 2014; 14:73. [PMID: 24655684 PMCID: PMC3998039 DOI: 10.1186/1471-2229-14-73] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 03/20/2014] [Indexed: 05/18/2023]
Abstract
BACKGROUND Soybean is one of the most important oil crops. The regulatory genes involved in oil accumulation are largely unclear. We initiated studies to identify genes that regulate this process. RESULTS One MYB-type gene GmMYB73 was found to display differential expression in soybean seeds of different developing stages by microarray analysis and was further investigated for its functions in lipid accumulation. GmMYB73 is a small protein with single MYB repeat and has similarity to CPC-like MYB proteins from Arabidopsis. GmMYB73 interacted with GL3 and EGL3, and then suppressed GL2, a negative regulator of oil accumulation. GmMYB73 overexpression enhanced lipid contents in both seeds and leaves of transgenic Arabidopsis plants. Seed length and thousand-seed weight were also promoted. GmMYB73 introduction into the Arabidopsis try cpc double mutant rescued the total lipids, seed size and thousand-seed weight. GmMYB73 also elevated lipid levels in seeds and leaves of transgenic Lotus, and in transgenic hairy roots of soybean plants. GmMYB73 promoted PLDα1 expression, whose promoter can be bound and inhibited by GL2. PLDα1 mutation reduced triacylglycerol levels mildly in seeds but significantly in leaves of Arabidopsis plants. CONCLUSIONS GmMYB73 may reduce GL2, and then release GL2-inhibited PLDα1 expression for lipid accumulation. Manipulation of GmMYB73 may potentially improve oil production in legume crop plants.
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Affiliation(s)
- Yun-Feng Liu
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qing-Tian Li
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiang Lu
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qing-Xin Song
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Sin-Man Lam
- State Key Lab of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wan-Ke Zhang
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Biao Ma
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qing Lin
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wei-Qun Man
- Institute of Soybean Research, Heilongjiang Provincial Academy of Agricultural Sciences, Harbin 150086, China
| | - Wei-Guang Du
- Institute of Soybean Research, Heilongjiang Provincial Academy of Agricultural Sciences, Harbin 150086, China
| | - Guang-Hou Shui
- State Key Lab of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Shou-Yi Chen
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jin-Song Zhang
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
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