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Kim T, Egesa A, Qin C, Mather H, Sandoya G, Begcy K. Global identification of LIM genes in response to different heat stress regimes in Lactuca sativa. BMC PLANT BIOLOGY 2024; 24:751. [PMID: 39103763 DOI: 10.1186/s12870-024-05466-x] [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: 01/30/2024] [Accepted: 07/29/2024] [Indexed: 08/07/2024]
Abstract
BACKGROUND LIM (Lineage-11 (LIN-11), Insulin-1 (ISL-1), and Mechanotransduction-3 (MEC-3)) genes belong to a family that hold ubiquitous properties contributing to organ, seed, and pollen development as well as developmental and cellular responses to biotic and abiotic stresses. Lettuce (Lactuca sativa) is a highly consumed vegetable crop susceptible heat stress. High temperatures limit lettuce's overall yield, quality and marketability. Lettuce LIM genes have not been identified and their role in response to high temperatures is not known. Aiming to identify potential new targets for thermoresilience, we searched for LIM genes in lettuce and compared them with orthologous of several dicotyledons and monocotyledons plant species. RESULTS We identified fourteen lettuce LIM genes distributed into eight different subgroups using a genome-wide analysis strategy. Three belonging to DAR (DA means "large" in Chinese) class I, two DAR class II, one in the WLIM1, two in the WLIM2, one in the PLIM1, two in the PLIM2 class, one ßLIM and two δLIMs. No DAR-like were identified in any of the species analyzed including lettuce. Interestingly, unlike other gene families in lettuce which underwent large genome tandem duplications, LIM genes did not increase in number compared to other plant species. The response to heat stress induced a dynamic transcriptional response on LsLIM genes. All heat stress regimes, including night stress, day stress and day and night stress were largely responsible for changes in LIM transcriptional expression. CONCLUSIONS Our global analysis at the genome level provides a detailed identification of LIM genes in lettuce and other dicotyledonous and monocotyledonous plant species. Gene structure, physical and chemical properties as well as chromosomal location and Cis-regulatory element analysis together with our gene expression analysis under different temperature regimes identified LsWLIM1, LsWLIM2b, LsDAR3 and LsDAR5 as candidate genes that could be used by breeding programs aiming to produce lettuce varieties able to withstand high temperatures.
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Affiliation(s)
- Taehoon Kim
- Environmental Horticulture Department, University of Florida, Gainesville, FL, 32611, USA
| | - Andrew Egesa
- Environmental Horticulture Department, University of Florida, Gainesville, FL, 32611, USA
| | - Claire Qin
- Environmental Horticulture Department, University of Florida, Gainesville, FL, 32611, USA
- Student Science Training Program, University of Florida, Gainesville, FL, 32611, USA
| | - Hannah Mather
- Environmental Horticulture Department, University of Florida, Gainesville, FL, 32611, USA
- Horticultural Science Department, University of Florida, Gainesville, FL, 32611, USA
| | - Germán Sandoya
- Horticultural Science Department, University of Florida, Gainesville, FL, 32611, USA
- Everglades Research and Education Center, Horticultural Sciences Department, University of Florida IFAS, Belle Glade, FL, 33430, USA
| | - Kevin Begcy
- Environmental Horticulture Department, University of Florida, Gainesville, FL, 32611, USA.
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Yimga Ouonkap SV, Palaniappan M, Pryze K, Jong E, Ali MF, Styler B, Almasaud RA, Harkey AF, Reid RW, Loraine AE, Smith SE, Muday GK, Pease JB, Palanivelu R, Johnson MA. Enhanced pollen tube performance at high temperature contributes to thermotolerant fruit production in tomato. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.01.606234. [PMID: 39149357 PMCID: PMC11326152 DOI: 10.1101/2024.08.01.606234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Rising temperature extremes during critical reproductive periods threaten the yield of major grain and fruit crops. Flowering plant reproduction depends on development of sufficient numbers of pollen grains and on their ability to generate a cellular extension, the pollen tube, which elongates through the pistil to deliver sperm cells to female gametes for double fertilization. These critical phases of the life cycle are sensitive to temperature and limit productivity under high temperature (HT). Previous studies have investigated the effects of HT on pollen development, but little is known about how HT applied during the pollen tube growth phase affects fertility. Here, we used tomato as a model fruit crop to determine how HT affects the pollen tube growth phase, taking advantage of cultivars noted for fruit production in exceptionally hot growing seasons. We found that exposure to HT solely during the pollen tube growth phase limits fruit biomass and seed set more significantly in thermosensitive cultivars than in thermotolerant cultivars. Importantly, we found that pollen tubes from the thermotolerant Tamaulipas cultivar have enhanced growth in vivo and in vitro under HT. Analysis of the pollen tube transcriptome's response to HT allowed us to develop hypotheses for the molecular basis of cellular thermotolerance in the pollen tube and we define two response modes (enhanced induction of stress responses, and higher basal levels of growth pathways repressed by heat stress) associated with reproductive thermotolerance. Importantly, we define key components of the pollen tube stress response identifying enhanced ROS homeostasis and pollen tube callose synthesis and deposition as important components of reproductive thermotolerance in Tamaulipas. Our work identifies the pollen tube growth phase as a viable target to enhance reproductive thermotolerance and delineates key pathways that are altered in crop varieties capable of fruiting under HT conditions. Abstract Figure
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De Jaeger-Braet J, Schnittger A. Heating up meiosis - Chromosome recombination and segregation under high temperatures. CURRENT OPINION IN PLANT BIOLOGY 2024; 80:102548. [PMID: 38749207 DOI: 10.1016/j.pbi.2024.102548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/09/2024] [Accepted: 04/18/2024] [Indexed: 06/14/2024]
Abstract
Heat stress is one of the major constraints to plant growth and fertility. During the current climate crisis, heat waves have increased dramatically, and even more extreme conditions are predicted for the near future, considerably affecting ecosystems and seriously threatening world food security. Although heat is very well known to affect especially reproductive structures, little is known about how heat interferes with reproduction in comparison to somatic cells and tissues. Recently, the effect of heat on meiosis as a central process in sexual reproduction has been analyzed in molecular and cytological depth. Notably, these studies are not only important for applied research by laying the foundation for breeding heat-resilient crops, but also for fundamental research, revealing general regulatory mechanisms of recombination and chromosome segregation control.
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Affiliation(s)
- Joke De Jaeger-Braet
- Department of Developmental Biology, Institute of Plant Science and Microbiology, University of Hamburg, Hamburg, Germany
| | - Arp Schnittger
- Department of Developmental Biology, Institute of Plant Science and Microbiology, University of Hamburg, Hamburg, Germany.
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Pandey S, Divakar S, Singh A. Genome editing prospects for heat stress tolerance in cereal crops. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:108989. [PMID: 39094478 DOI: 10.1016/j.plaphy.2024.108989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 06/10/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
The world population is steadily growing, exerting increasing pressure to feed in the future, which would need additional production of major crops. Challenges associated with changing and unpredicted climate (such as heat waves) are causing global food security threats. Cereal crops are a staple food for a large portion of the world's population. They are mostly affected by these environmentally generated abiotic stresses. Therefore, it is imperative to develop climate-resilient cultivars to support the sustainable production of main cereal crops (Rice, wheat, and maize). Among these stresses, heat stress causes significant losses to major cereals. These issues can be solved by comprehending the molecular mechanisms of heat stress and creating heat-tolerant varieties. Different breeding and biotechnology techniques in the last decade have been employed to develop heat-stress-tolerant varieties. However, these time-consuming techniques often lack the pace required for varietal improvement in climate change scenarios. Genome editing technologies offer precise alteration in the crop genome for developing stress-resistant cultivars. CRISPR/Cas9 (Clustered regularly interspaced short palindromic repeat/Cas9), one such genome editing platform, recently got scientists' attention due to its easy procedures. It is a powerful tool for functional genomics as well as crop breeding. This review will focus on the molecular mechanism of heat stress and different targets that can be altered using CRISPR/Cas genome editing tools to generate climate-smart cereal crops. Further, heat stress signaling and essential players have been highlighted to provide a comprehensive overview of the topic.
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Affiliation(s)
- Saurabh Pandey
- Department of Agriculture, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
| | - S Divakar
- Department of Agricultural Biotechnology Biotechnology and Molecular Biotechnology, CBSH, RPCAU, Pusa, Samastipur, Bihar, 8481253, India
| | - Ashutosh Singh
- Centre for Advanced Studies on Climate Change, RPCAU, Pusa, Bihar, 848125, India.
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Lv X, Yao Q, Mao F, Liu M, Wang Y, Wang X, Gao Y, Wang Y, Liao S, Wang P, Huang S. Heat stress and sexual reproduction in maize: unveiling the most pivotal factors and the greatest opportunities. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4219-4243. [PMID: 38183327 DOI: 10.1093/jxb/erad506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/05/2024] [Indexed: 01/08/2024]
Abstract
The escalation in the intensity, frequency, and duration of high-temperature (HT) stress is currently unparalleled, which aggravates the challenges for crop production. Yet, the stage-dependent responses of reproductive organs to HT stress at the morphological, physiological, and molecular levels remain inadequately explored in pivotal staple crops. This review synthesized current knowledge regarding the mechanisms by which HT stress induces abnormalities and aberrations in reproductive growth and development, as well as by which it alters the morphology and function of florets, flowering patterns, and the processes of pollination and fertilization in maize (Zea mays L.). We identified the stage-specific sensitivities to HT stress and accurately defined the sensitive period from a time scale of days to hours. The microspore tetrad phase of pollen development and anthesis (especially shortly after pollination) are most sensitive to HT stress, and even brief temperature spikes during these stages can lead to significant kernel loss. The impetuses behind the heat-induced impairments in seed set are closely related to carbon, reactive oxygen species, phytohormone signals, ion (e.g. Ca2+) homeostasis, plasma membrane structure and function, and others. Recent advances in understanding the genetic mechanisms underlying HT stress responses during maize sexual reproduction have been systematically summarized.
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Affiliation(s)
- Xuanlong Lv
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Qian Yao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Fen Mao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Mayang Liu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yudong Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Xin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yingbo Gao
- Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yuanyuan Wang
- College of Agronomy, South China Agricultural University, Guangdong, China
| | - Shuhua Liao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
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Gong W, Oubounyt M, Baumbach J, Dresselhaus T. Heat-stress-induced ROS in maize silks cause late pollen tube growth arrest and sterility. iScience 2024; 27:110081. [PMID: 38979009 PMCID: PMC11228802 DOI: 10.1016/j.isci.2024.110081] [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: 11/11/2023] [Revised: 03/12/2024] [Accepted: 05/20/2024] [Indexed: 07/10/2024] Open
Abstract
The reproductive phase of plants is highly sensitive to ambient temperature stresses. To investigate sensitivity of female reproductive organs in grass crops during the pollination phase, we exposed the elongated stigma (silk) of maize to ambient environment at the silking stage. Moderate heat stress causes cell death of silk hair cells but did not affect early pollen tube growth inside the silk. Late pollen tube growth arrest was observed, leading to sterility. Heat stress causes elevated levels of reactive oxygen species (ROS) in silks, whose levels can be reduced by scavengers partly restoring pollen tube growth and fertility. A number of biological processes including hydrogen peroxide catabolic processes and bHLH transcription factor genes are downregulated by heat stress, while some NAC transcription factor genes are strongly upregulated. In conclusion, this study now provides a basis to select genes for engineering heat-stress-tolerant grass crops during the pollination phase.
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Affiliation(s)
- Wen Gong
- Cell Biology and Plant Biochemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Mhaned Oubounyt
- Faculty of Mathematics, Informatics and Natural Sciences, University of Hamburg, 22607 Hamburg, Germany
| | - Jan Baumbach
- Faculty of Mathematics, Informatics and Natural Sciences, University of Hamburg, 22607 Hamburg, Germany
| | - Thomas Dresselhaus
- Cell Biology and Plant Biochemistry, University of Regensburg, 93040 Regensburg, Germany
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7
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Li X, Bruckmann A, Dresselhaus T, Begcy K. Heat stress at the bicellular stage inhibits sperm cell development and transport into pollen tubes. PLANT PHYSIOLOGY 2024; 195:2111-2128. [PMID: 38366643 PMCID: PMC11213256 DOI: 10.1093/plphys/kiae087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 02/18/2024]
Abstract
For successful double fertilization in flowering plants (angiosperms), pollen tubes deliver 2 nonmotile sperm cells toward female gametes (egg and central cell, respectively). Heatwaves, especially during the reproduction period, threaten male gametophyte (pollen) development, resulting in severe yield losses. Using maize (Zea mays) as a crop and grass model system, we found strong seed set reduction when moderate heat stress was applied for 2 d during the uni- and bicellular stages of pollen development. We show that heat stress accelerates pollen development and impairs pollen germination capabilities when applied at the unicellular stage. Heat stress at the bicellular stage impairs sperm cell development and transport into pollen tubes. To understand the course of the latter defects, we used marker lines and analyzed the transcriptomes of isolated sperm cells. Heat stress affected the expression of genes associated with transcription, RNA processing and translation, DNA replication, and the cell cycle. This included the genes encoding centromeric histone 3 (CENH3) and α-tubulin. Most genes that were misregulated encode proteins involved in the transition from metaphase to anaphase during pollen mitosis II. Heat stress also activated spindle assembly check point and meta- to anaphase transition genes in sperm cells. In summary, misregulation of the identified genes during heat stress at the bicellular stage results in sperm cell development and transport defects ultimately leading to sterility.
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Affiliation(s)
- Xingli Li
- Department of Cell Biology and Plant Biochemistry, University of Regensburg, 93053 Regensburg, Germany
| | - Astrid Bruckmann
- Department for Biochemistry I, Biochemistry Centre, University of Regensburg, 93053 Regensburg, Germany
| | - Thomas Dresselhaus
- Department of Cell Biology and Plant Biochemistry, University of Regensburg, 93053 Regensburg, Germany
| | - Kevin Begcy
- Environmental Horticulture Department, University of Florida, Gainesville, FL32611, USA
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Jain P. Heat shock: Impact of moderate temperature on pollen development in maize. PLANT PHYSIOLOGY 2024; 195:1765-1766. [PMID: 38593024 PMCID: PMC11213239 DOI: 10.1093/plphys/kiae207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Affiliation(s)
- Prateek Jain
- Assistant Features Editor, Plant Physiology, American Society of Plant Biologists
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280, USA
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9
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Yao Q, Li P, Wang X, Liao S, Wang P, Huang S. Molecular mechanisms underlying the negative effects of transient heatwaves on crop fertility. PLANT COMMUNICATIONS 2024:101009. [PMID: 38915200 DOI: 10.1016/j.xplc.2024.101009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/04/2024] [Accepted: 06/22/2024] [Indexed: 06/26/2024]
Abstract
Transient heatwaves occurring more frequently as the climate warms, yet their impacts on crop yield are severely underestimated and even overlooked. Heatwaves lasting only a few days or even hours during sensitive stages, such as microgametogenesis and flowering, can significantly reduce crop yield by disrupting plant reproduction. Recent advances in multi-omics and GWAS analysis have shed light on the specific organs (e.g., pollen, lodicule, style), key metabolic pathways (sugar and reactive oxygen species metabolism, Ca2+ homeostasis), and essential genes that are involved in crop responses to transient heatwaves during sensitive stages. This review therefore places particular emphasis on heat-sensitive stages, with pollen development, floret opening, pollination, and fertilization as the central narrative thread. The multifaceted effects of transient heatwaves and their molecular basis are systematically reviewed, with a focus on key structures such as the lodicule and tapetum. A number of heat-tolerance genes associated with these processes have been identified in major crops like maize and rice. The mechanisms and key heat-tolerance genes shared among different stages may facilitate the more precise improvement of heat-tolerant crops.
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Affiliation(s)
- Qian Yao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ping Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Shuhua Liao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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Liu D, He Y, Wang Y, Chen W, Yang J, Zhang Y, Feng Y, Zhao Y, Lin S, Huang L. Tetrad stage transient cold stress skews auxin-mediated energy metabolism balance in Chinese cabbage pollen. PLANT PHYSIOLOGY 2024; 195:1312-1332. [PMID: 38438131 DOI: 10.1093/plphys/kiae123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/03/2024] [Accepted: 01/21/2024] [Indexed: 03/06/2024]
Abstract
Changing ambient temperature often impairs plant development and sexual reproduction, particularly pollen ontogenesis. However, mechanisms underlying cold stress-induced male sterility are not well understood. Here, we exposed Chinese cabbage (Brassica campestris) to different cold conditions during flowering and demonstrated that the tetrad stage was the most sensitive. After completion of pollen development at optimal conditions, transient cold stress at the tetrad stage still impacted auxin levels, starch and lipid accumulation, and pollen germination, ultimately resulting in partial male sterility. Transcriptome and metabolome analyses and histochemical staining indicated that the reduced pollen germination rate was due to the imbalance of energy metabolism during pollen maturation. The investigation of β-glucuronidase (GUS)-overexpressing transgenic plants driven by the promoter of DR5 (DR5::GUS report system) combined with cell tissue staining and metabolome analysis further validated that cold stress during the tetrad stage reduced auxin levels in mature pollen grains. Low-concentration auxin treatment on floral buds at the tetrad stage before cold exposure improved the cold tolerance of mature pollen grains. Artificially changing the content of endogenous auxin during pollen maturation by spraying chemical reagents and loss-of-function investigation of the auxin biosynthesis gene YUCCA6 by artificial microRNA technology showed that starch overaccumulation severely reduced the pollen germination rate. In summary, we revealed that transient cold stress at the tetrad stage of pollen development in Chinese cabbage causes auxin-mediated starch-related energy metabolism imbalance that contributes to the decline in pollen germination rate and ultimately seed set.
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Affiliation(s)
- Dandan Liu
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
- Hainan Institute of Zhejiang University, Sanya 572024, China
| | - Yuanrong He
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
- Hainan Institute of Zhejiang University, Sanya 572024, China
| | - Yijie Wang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Weiwei Chen
- Research Centre for Plant RNA Signaling, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Jianli Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuzhi Zhang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Yaoyao Feng
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Yuxue Zhao
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Sue Lin
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Li Huang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
- Hainan Institute of Zhejiang University, Sanya 572024, China
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Postiglione AE, Delange AM, Ali MF, Wang EY, Houben M, Hahn SL, Khoury MG, Roark CM, Davis M, Reid RW, Pease JB, Loraine AE, Muday GK. Flavonols improve thermotolerance in tomato pollen during germination and tube elongation by maintaining ROS homeostasis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.23.573189. [PMID: 38187649 PMCID: PMC10769439 DOI: 10.1101/2023.12.23.573189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Elevated temperatures impair pollen performance and reproductive success, resulting in lower crop yields. The Solanum lycopersicum anthocyanin reduced ( are ) mutant has a FLAVANONE 3 HYDROXYLASE ( F3H ) gene mutation resulting in impaired synthesis of flavonol antioxidants. The are mutant has reduced pollen performance and seed set relative to the VF36 parental line, which is accentuated at elevated temperatures. Transformation of are with the wild-type F3H gene, or chemical complementation with flavonols, prevented temperature-dependent ROS accumulation in pollen and reversed are's reduced viability, germination, and tube elongation to VF36 levels. VF36 transformed with an F3H overexpression construct prevented temperature driven ROS increases and impaired pollen performance, revealing thermotolerance results from elevated flavonol synthesis. Although stigmas of are had reduced flavonols and elevated ROS, the growth of are pollen tubes were similarly impaired in both are and VF36 pistils. RNA-Seq was performed at optimal and stress temperatures in are , VF36, and the VF36 F3H overexpression line at multiple timepoints across pollen tube elongation. Differentially expressed gene numbers increased with duration of elevated temperature in all genotypes, with the largest number in are . These findings suggest potential agricultural interventions to combat the negative effects of heat-induced ROS in pollen that leads to reproductive failure. One sentence summary Flavonol antioxidants reduce the negative impacts of elevated temperatures on pollen performance by reducing levels of heat induced reactive oxygen species and modulation of heat-induced changes in the pollen transcriptome.
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Begcy K, Mendes MA, De Storme N. Editorial: Plant reproduction under environmental stress. FRONTIERS IN PLANT SCIENCE 2024; 15:1369070. [PMID: 38469324 PMCID: PMC10926368 DOI: 10.3389/fpls.2024.1369070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/07/2024] [Indexed: 03/13/2024]
Affiliation(s)
- Kevin Begcy
- Environmental Horticulture Department, University of Florida, Gainesville, FL, United States
- Plant Molecular and Cellular Biology Graduate Program, University of Florida, Gainesville, FL, United States
| | - Marta A Mendes
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milan, Italy
| | - Nico De Storme
- Laboratory for Plant Genetics and Crop Improvement, Division of Crop Biotechnics, Department of Biosystems, Heverlee, KU Leuven, Belgium
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Xue M, Han X, Zhang L, Chen S. Heat-Resistant Inbred Lines Coordinate the Heat Response Gene Expression Remarkably in Maize ( Zea mays L.). Genes (Basel) 2024; 15:289. [PMID: 38540348 PMCID: PMC10970198 DOI: 10.3390/genes15030289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/10/2024] [Accepted: 02/18/2024] [Indexed: 06/14/2024] Open
Abstract
High temperatures are increasingly becoming a prominent environmental factor accelerating the adverse influence on the growth and development of maize (Zea mays L.). Therefore, it is critical to identify the key genes and pathways related to heat stress (HS) tolerance in maize. Great challenges have been faced in dissecting genetic mechanisms and uncovering master genes for HS tolerance. Here, Z58D showed more thermotolerance than AF171 at the seedling stage with a lower wilted leaf rate and H2O2 accumulation under HS conditions. Transcriptomic analysis identified 3006 differentially expressed genes (DEGs) in AF171 and 4273 DEGs in Z58D under HS treatments, respectively. Subsequently, GO enrichment analysis showed that commonly upregulated genes in AF171 and Z58D were significantly enriched in the following biological processes, including protein folding, response to heat, response to temperature stimulus and response to hydrogen peroxide. Moreover, the comparison between the two inbred lines under HS showed that response to heat and response to temperature stimulus were significantly over-represented for the 1234 upregulated genes in Z58D. Furthermore, more commonly upregulated genes exhibited higher expression levels in Z58D than AF171. In addition, maize inbred CIMBL55 was verified to be more tolerant than B73, and more commonly upregulated genes also showed higher expression levels in CIMBL55 than B73 under HS. These consistent results indicate that heat-resistant inbred lines may coordinate the remarkable expression of genes in order to recover from HS. Additionally, 35 DEGs were conserved among five inbred lines via comparative transcriptomic analysis. Most of them were more pronounced in Z58D than AF171 at the expression levels. These candidate genes may confer thermotolerance in maize.
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Affiliation(s)
- Ming Xue
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China (L.Z.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Xiaoyue Han
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China (L.Z.)
| | - Luyao Zhang
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China (L.Z.)
| | - Saihua Chen
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China (L.Z.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
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Zhao P, Sun L, Zhang S, Jiao B, Wang J, Ma C. Integrated Transcriptomics and Metabolomics Analysis of Two Maize Hybrids (ZD309 and XY335) under Heat Stress at the Flowering Stage. Genes (Basel) 2024; 15:189. [PMID: 38397179 PMCID: PMC10887930 DOI: 10.3390/genes15020189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/15/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
High temperature around flowering has a serious impact on the growth and development of maize. However, few maize genes related to flowering under heat stress have been confirmed, and the regulatory mechanism is unclear. To reveal the molecular mechanism of heat tolerance in maize, two maize hybrids, ZD309 and XY335, with different heat resistance, were selected to perform transcriptome and metabolomics analysis at the flowering stage under heat stress. In ZD309, 314 up-regulated and 463 down-regulated differentially expressed genes (DEGs) were detected, while 168 up-regulated and 119 down-regulated DEGs were identified in XY335. By comparing the differential gene expression patterns of ZD309 and XY335, we found the "frontloaded" genes which were less up-regulated in heat-tolerant maize during high temperature stress. They included heat tolerance genes, which may react faster at the protein level to provide resilience to instantaneous heat stress. A total of 1062 metabolites were identified via metabolomics analysis. Lipids, saccharides, and flavonoids were found to be differentially expressed under heat stress, indicating these metabolites' response to high temperature. Our study will contribute to the identification of heat tolerance genes in maize, therefore contributing to the breeding of heat-tolerant maize varieties.
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Affiliation(s)
- Pu Zhao
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/Hebei Key Laboratory of Plant Genetic Engineering, Shijiazhuang 050051, China; (P.Z.); (L.S.); (S.Z.); (B.J.); (J.W.)
| | - Lei Sun
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/Hebei Key Laboratory of Plant Genetic Engineering, Shijiazhuang 050051, China; (P.Z.); (L.S.); (S.Z.); (B.J.); (J.W.)
| | - Siqi Zhang
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/Hebei Key Laboratory of Plant Genetic Engineering, Shijiazhuang 050051, China; (P.Z.); (L.S.); (S.Z.); (B.J.); (J.W.)
- College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao 066000, China
| | - Bo Jiao
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/Hebei Key Laboratory of Plant Genetic Engineering, Shijiazhuang 050051, China; (P.Z.); (L.S.); (S.Z.); (B.J.); (J.W.)
| | - Jiao Wang
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/Hebei Key Laboratory of Plant Genetic Engineering, Shijiazhuang 050051, China; (P.Z.); (L.S.); (S.Z.); (B.J.); (J.W.)
| | - Chunhong Ma
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Science/Hebei Key Laboratory of Plant Genetic Engineering, Shijiazhuang 050051, China; (P.Z.); (L.S.); (S.Z.); (B.J.); (J.W.)
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15
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Lykins J, Moschitto MJ, Zhou Y, Filippova EV, Le HV, Tomita T, Fox BA, Bzik DJ, Su C, Rajagopala SV, Flores K, Spano F, Woods S, Roberts CW, Hua C, El Bissati K, Wheeler KM, Dovgin S, Muench SP, McPhillie M, Fishwick CW, Anderson WF, Lee PJ, Hickman M, Weiss LM, Dubey JP, Lorenzi HA, Silverman RB, McLeod RL. From TgO/GABA-AT, GABA, and T-263 Mutant to Conception of Toxoplasma. iScience 2024; 27:108477. [PMID: 38205261 PMCID: PMC10776954 DOI: 10.1016/j.isci.2023.108477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 04/28/2023] [Accepted: 11/13/2023] [Indexed: 01/12/2024] Open
Abstract
Toxoplasma gondii causes morbidity, mortality, and disseminates widely via cat sexual stages. Here, we find T. gondii ornithine aminotransferase (OAT) is conserved across phyla. We solve TgO/GABA-AT structures with bound inactivators at 1.55 Å and identify an inactivator selective for TgO/GABA-AT over human OAT and GABA-AT. However, abrogating TgO/GABA-AT genetically does not diminish replication, virulence, cyst-formation, or eliminate cat's oocyst shedding. Increased sporozoite/merozoite TgO/GABA-AT expression led to our study of a mutagenized clone with oocyst formation blocked, arresting after forming male and female gametes, with "Rosetta stone"-like mutations in genes expressed in merozoites. Mutations are similar to those in organisms from plants to mammals, causing defects in conception and zygote formation, affecting merozoite capacitation, pH/ionicity/sodium-GABA concentrations, drawing attention to cyclic AMP/PKA, and genes enhancing energy or substrate formation in TgO/GABA-AT-related-pathways. These candidates potentially influence merozoite's capacity to make gametes that fuse to become zygotes, thereby contaminating environments and causing disease.
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Affiliation(s)
- Joseph Lykins
- Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Matthew J. Moschitto
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, and Center for Developmental Therapeutics, Northwestern University, Evanston, IL 60208-3113, USA
| | - Ying Zhou
- Department of Ophthalmology and Visual Sciences, The University of Chicago, Chicago, IL 60637, USA
| | - Ekaterina V. Filippova
- Center for Structural Genomics of Infectious Diseases and the Department of Biochemistry and Molecular Genetics, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Hoang V. Le
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, and Center for Developmental Therapeutics, Northwestern University, Evanston, IL 60208-3113, USA
| | - Tadakimi Tomita
- Division of Parasitology, Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Barbara A. Fox
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA
| | - David J. Bzik
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA
| | - Chunlei Su
- Department of Microbiology, University of Tennessee, Knoxville, TN 37996, USA
| | - Seesandra V. Rajagopala
- Department of Infectious Diseases, The J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - Kristin Flores
- Center for Structural Genomics of Infectious Diseases and the Department of Biochemistry and Molecular Genetics, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Furio Spano
- Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Stuart Woods
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow Scotland, UK
| | - Craig W. Roberts
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow Scotland, UK
| | - Cong Hua
- Department of Ophthalmology and Visual Sciences, The University of Chicago, Chicago, IL 60637, USA
| | - Kamal El Bissati
- Department of Ophthalmology and Visual Sciences, The University of Chicago, Chicago, IL 60637, USA
| | - Kelsey M. Wheeler
- Department of Ophthalmology and Visual Sciences, The University of Chicago, Chicago, IL 60637, USA
| | - Sarah Dovgin
- Department of Ophthalmology and Visual Sciences, The University of Chicago, Chicago, IL 60637, USA
| | - Stephen P. Muench
- School of Biomedical Sciences and Astbury Centre for Structural Molecular Biology, The University of Leeds, Leeds, West York LS2 9JT, UK
| | - Martin McPhillie
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Colin W.G. Fishwick
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, UK
| | - Wayne F. Anderson
- Center for Structural Genomics of Infectious Diseases and the Department of Biochemistry and Molecular Genetics, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
- Department of Pharmacology, Northwestern University, Chicago, IL 60611, USA
| | - Patricia J. Lee
- Division of Experimental Therapeutics, Military Malaria Research Program, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA
| | - Mark Hickman
- Division of Experimental Therapeutics, Military Malaria Research Program, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA
| | - Louis M. Weiss
- Division of Parasitology, Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Division of Infectious Diseases, Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Jitender P. Dubey
- Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD 20705, USA
| | - Hernan A. Lorenzi
- Department of Infectious Diseases, The J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - Richard B. Silverman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Molecular Innovation and Drug Discovery, and Center for Developmental Therapeutics, Northwestern University, Evanston, IL 60208-3113, USA
- Department of Pharmacology, Northwestern University, Chicago, IL 60611, USA
| | - Rima L. McLeod
- Department of Ophthalmology and Visual Sciences, The University of Chicago, Chicago, IL 60637, USA
- Department of Pediatrics (Infectious Diseases), Institute of Genomics, Genetics, and Systems Biology, Global Health Center, Toxoplasmosis Center, CHeSS, The College, University of Chicago, Chicago, IL 60637, USA
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16
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Chowdhury NB, Simons-Senftle M, Decouard B, Quillere I, Rigault M, Sajeevan KA, Acharya B, Chowdhury R, Hirel B, Dellagi A, Maranas C, Saha R. A multi-organ maize metabolic model connects temperature stress with energy production and reducing power generation. iScience 2023; 26:108400. [PMID: 38077131 PMCID: PMC10709110 DOI: 10.1016/j.isci.2023.108400] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 02/18/2024] Open
Abstract
Climate change has adversely affected maize productivity. Thereby, a holistic understanding of metabolic crosstalk among its organs is important to address this issue. Thus, we reconstructed the first multi-organ maize metabolic model, iZMA6517, and contextualized it with heat and cold stress transcriptomics data using expression distributed reaction flux measurement (EXTREAM) algorithm. Furthermore, implementing metabolic bottleneck analysis on contextualized models revealed differences between these stresses. While both stresses had reducing power bottlenecks, heat stress had additional energy generation bottlenecks. We also performed thermodynamic driving force analysis, revealing thermodynamics-reducing power-energy generation axis dictating the nature of temperature stress responses. Thus, a temperature-tolerant maize ideotype can be engineered by leveraging the proposed thermodynamics-reducing power-energy generation axis. We experimentally inoculated maize root with a beneficial mycorrhizal fungus, Rhizophagus irregularis, and as a proof-of-concept demonstrated its efficacy in alleviating temperature stress. Overall, this study will guide the engineering effort of temperature stress-tolerant maize ideotypes.
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Affiliation(s)
- Niaz Bahar Chowdhury
- Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | | | - Berengere Decouard
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Isabelle Quillere
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Martine Rigault
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | | | - Bibek Acharya
- Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Ratul Chowdhury
- Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Bertrand Hirel
- Centre de Versailles-Grignon, Institut National de Recherche pour l’Agriculture, Versailles, France
| | - Alia Dellagi
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Costas Maranas
- Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Rajib Saha
- Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
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17
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Resentini F, Orozco-Arroyo G, Cucinotta M, Mendes MA. The impact of heat stress in plant reproduction. FRONTIERS IN PLANT SCIENCE 2023; 14:1271644. [PMID: 38126016 PMCID: PMC10732258 DOI: 10.3389/fpls.2023.1271644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/13/2023] [Indexed: 12/23/2023]
Abstract
The increment in global temperature reduces crop productivity, which in turn threatens food security. Currently, most of our food supply is produced by plants and the human population is estimated to reach 9 billion by 2050. Gaining insights into how plants navigate heat stress in their reproductive phase is essential for effectively overseeing the future of agricultural productivity. The reproductive success of numerous plant species can be jeopardized by just one exceptionally hot day. While the effects of heat stress on seedlings germination and root development have been extensively investigated, studies on reproduction are limited. The intricate processes of gamete development and fertilization unfold within a brief timeframe, largely concealed within the flower. Nonetheless, heat stress is known to have important effects on reproduction. Considering that heat stress typically affects both male and female reproductive structures concurrently, it remains crucial to identify cultivars with thermotolerance. In such cultivars, ovules and pollen can successfully undergo development despite the challenges posed by heat stress, enabling the completion of the fertilization process and resulting in a robust seed yield. Hereby, we review the current understanding of the molecular mechanisms underlying plant resistance to abiotic heat stress, focusing on the reproductive process in the model systems of Arabidopsis and Oryza sativa.
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Affiliation(s)
| | | | | | - Marta A. Mendes
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
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18
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Rojas-Gómez M, Moral J, López-Orozco R, Cabello D, Oteros J, Barranco D, Galán C, Díez CM. Pollen production in olive cultivars and its interannual variability. ANNALS OF BOTANY 2023; 132:1145-1158. [PMID: 37856076 PMCID: PMC10809056 DOI: 10.1093/aob/mcad163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/18/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND AND AIMS Olive (Olea europaea subsp. europaea var. europaea) is the most extensively cultivated fruit crop worldwide. It is considered a wind-pollinated and strictly outcrossing crop. Thus, elevated pollen production is crucial to guarantee optimum fruit set and yield. Despite these facts, the variability of pollen production within the cultivated olive has been scarcely studied. This study aimed to characterize this feature by analysing a representative set of worldwide olive cultivars. METHODS We evaluated the average number of pollen grains per anther in 57 principal cultivars over three consecutive years. We applied a standard generalized linear model (GLM) approach to study the influence of cultivar, year and the previous year's fruit load on the amount of pollen per anther. Additionally, the K-means method was used for cluster analysis to group cultivars based on their pollen production capacity. KEY RESULTS Pollen production per anther was highly variable among olive cultivars. The cultivar significantly accounted for 51.3 % of the variance in pollen production and the year for 0.3 %. The interaction between the two factors explained 8.4 % of the variance, indicating that not all cultivars were equally stable in producing pollen across the years. The previous year's fruit load and its interaction with the year were significant, but barely accounted for 1.5 % of the variance. Olive cultivars were classified into four clusters according to their capacity to produce pollen. Interestingly, the fourth cluster was composed of male-sterile cultivars, which presumably share this character by inheritance. CONCLUSIONS Pollen production per anther varied extensively within the cultivated olive. This variation was mainly driven by the cultivar and its interaction with the year. The differential capacity of olive cultivars to produce pollen should be considered not only for designing new orchards but also gardens where this species is used as an ornamental.
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Affiliation(s)
- M Rojas-Gómez
- Department of Agronomy, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
| | - J Moral
- Department of Agronomy, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
| | - R López-Orozco
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
- Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, E-14071, Córdoba, Spain
| | - D Cabello
- Department of Agronomy, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
| | - J Oteros
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
- Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, E-14071, Córdoba, Spain
| | - D Barranco
- Department of Agronomy, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
| | - C Galán
- Department of Botany, Ecology and Plant Physiology, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
- Andalusian Inter-University Institute for Earth System IISTA, University of Cordoba, E-14071, Córdoba, Spain
| | - C M Díez
- Department of Agronomy, Agrifood Campus of International Excellence CeiA3, University of Cordoba, Rabanales Campus, Celestino Mutis Building, E-14071, Córdoba, Spain
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19
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Wang Y, Lv X, Sheng D, Hou X, Mandal S, Liu X, Zhang P, Shen S, Wang P, Krishna Jagadish SV, Huang S. Heat-dependent postpollination limitations on maize pollen tube growth and kernel sterility. PLANT, CELL & ENVIRONMENT 2023; 46:3822-3838. [PMID: 37623372 DOI: 10.1111/pce.14702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 08/09/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023]
Abstract
Heat stress has a negative impact on pollen development in maize (Zea mays L.) but the postpollination events that determine kernel sterility are less well characterised. The impact of short-term (hours) heat exposure during postpollination was therefore assessed in silks and ovaries. The temperatures inside the kernels housed within the husks was significantly lower than the imposed heat stress. This protected the ovaries and possibly the later phase of pollen tube growth from the adverse effects of heat stress. Failure of maize kernel fertilization was observed within 6 h of heat stress exposure postpollination. This was accompanied by a significant restriction of early pollen tube growth rather than pollen germination. Limitations on early pollen tube growth were therefore a major factor contributing to heat stress-induced kernel sterility. Exposure to heat stress altered the sugar composition of silks, suggesting that hexose supply contributed to the limitations on pollen tube growth. Moreover, the activities of sucrose metabolising enzymes, the expression of sucrose degradation and trehalose biosynthesis genes were decreased following heat stress. Significant increases in reactive oxygen species, abscisic acid and auxin levels accompanied by altered expression of phytohormone-related genes may also be important in the heat-induced suppression of pollen tube growth.
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Affiliation(s)
- Yuanyuan Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
- Department of Agronomy, Kansas State University, Manhattan, Kansas, USA
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Xuanlong Lv
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Dechang Sheng
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Xinfang Hou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Shreya Mandal
- Department of Agronomy, Kansas State University, Manhattan, Kansas, USA
- Division of Biochemistry, Indian Agricultural Research Institute, Pusa, New Delhi, India
| | - Xiaoli Liu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Ping Zhang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, China
| | - Si Shen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - S V Krishna Jagadish
- Department of Agronomy, Kansas State University, Manhattan, Kansas, USA
- Department of Plant and Soil Science, Texas Tech University, Lubbock, Texas, USA
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
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20
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Ding X, Lv M, Liu Y, Guo Q, Gai J, Yang S. A small heat shock protein GmHSP18.5a improves the male fertility restorability of cytoplasmic male sterility-based restorer line under high temperature stress in soybean. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111867. [PMID: 37741497 DOI: 10.1016/j.plantsci.2023.111867] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/25/2023]
Abstract
Small heat shock protein (sHSP) is involved in high temperature (HT) stress response. However, the function of sHSPs in regulating male fertility of soybean under HT stress remains largely unknown. Here, we identified a sHSP gene, GmHSP18.5a, which was responded to HT stress during flowering in cytoplasmic male sterility (CMS)-based restorer line of soybean. Moreover, GmHSFA6b turned out to directly activated the expression of GmHSP18.5a by binding to the heat shock cis-element in its promoter. Overexpression of GmHSP18.5a increased male fertility in transgenic Arabidopsis, soybean CMS-based restorer line and its hybrid F1 with CMS line under HT stress. Reactive oxygen species (ROS) content detection revealed that GmHSP18.5a promoted the ROS scavenging ability of Arabidopsis inflorescence and soybean flower bud under HT stress. Enzyme activity assay and gene expression analysis indicated that GmHS18.5a mainly increased the activity of antioxidant enzymes and the expression level of ROS metabolism-related genes under HT stress. Our results indicated that GmHSP18.5a improved the male fertility restorability of CMS-based restorer line in soybean by regulating ROS metabolic pathway and reducing ROS accumulation. Our findings not only revealed the molecular mechanism of sHSP regulating the male fertility of soybean under HT stress, but also provided a theoretical basis for creating strong restorer line with thermotolerance.
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Affiliation(s)
- Xianlong Ding
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Menglin Lv
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ying Liu
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Qingling Guo
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Junyi Gai
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shouping Yang
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China.
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21
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Liu M, Zhou Y, Sun J, Mao F, Yao Q, Li B, Wang Y, Gao Y, Dong X, Liao S, Wang P, Huang S. From the floret to the canopy: High temperature tolerance during flowering. PLANT COMMUNICATIONS 2023; 4:100629. [PMID: 37226443 PMCID: PMC10721465 DOI: 10.1016/j.xplc.2023.100629] [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: 02/20/2023] [Revised: 04/29/2023] [Accepted: 05/22/2023] [Indexed: 05/26/2023]
Abstract
Heat waves induced by climate warming have become common in food-producing regions worldwide, frequently coinciding with high temperature (HT)-sensitive stages of many crops and thus threatening global food security. Understanding the HT sensitivity of reproductive organs is currently of great interest for increasing seed set. The responses of seed set to HT involve multiple processes in both male and female reproductive organs, but we currently lack an integrated and systematic summary of these responses for the world's three leading food crops (rice, wheat, and maize). In the present work, we define the critical high temperature thresholds for seed set in rice (37.2°C ± 0.2°C), wheat (27.3°C ± 0.5°C), and maize (37.9°C ± 0.4°C) during flowering. We assess the HT sensitivity of these three cereals from the microspore stage to the lag period, including effects of HT on flowering dynamics, floret growth and development, pollination, and fertilization. Our review synthesizes existing knowledge about the effects of HT stress on spikelet opening, anther dehiscence, pollen shedding number, pollen viability, pistil and stigma function, pollen germination on the stigma, and pollen tube elongation. HT-induced spikelet closure and arrest of pollen tube elongation have a catastrophic effect on pollination and fertilization in maize. Rice benefits from pollination under HT stress owing to bottom anther dehiscence and cleistogamy. Cleistogamy and secondary spikelet opening increase the probability of pollination success in wheat under HT stress. However, cereal crops themselves also have protective measures under HT stress. Lower canopy/tissue temperatures compared with air temperatures indicate that cereal crops, especially rice, can partly protect themselves from heat damage. In maize, husk leaves reduce inner ear temperature by about 5°C compared with outer ear temperature, thereby protecting the later phases of pollen tube growth and fertilization processes. These findings have important implications for accurate modeling, optimized crop management, and breeding of new varieties to cope with HT stress in the most important staple crops.
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Affiliation(s)
- Mayang Liu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yuhan Zhou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Jiaxin Sun
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Fen Mao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Qian Yao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Baole Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yuanyuan Wang
- College of Agronomy, South China Agricultural University, Guangdong, China
| | - Yingbo Gao
- Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xin Dong
- Chongqing Academy of Agricultural Sciences, Chongqing, China
| | - Shuhua Liao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China.
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22
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Sinha R, Induri SP, Peláez-Vico MÁ, Tukuli A, Shostak B, Zandalinas SI, Joshi T, Fritschi FB, Mittler R. The transcriptome of soybean reproductive tissues subjected to water deficit, heat stress, and a combination of water deficit and heat stress. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:1064-1080. [PMID: 37006191 DOI: 10.1111/tpj.16222] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/13/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Global warming and climate change are driving an alarming increase in the frequency and intensity of extreme climate events, such as droughts, heat waves, and their combination, inflicting heavy losses to agricultural production. Recent studies revealed that the transcriptomic responses of different crops to water deficit (WD) or heat stress (HS) are very different from that to a combination of WD + HS. In addition, it was found that the effects of WD, HS, and WD + HS are significantly more devastating when these stresses occur during the reproductive growth phase of crops, compared to vegetative growth. As the molecular responses of different reproductive and vegetative tissues of plants to WD, HS, or WD + HS could be different from each other and these differences could impact many current and future attempts to enhance the resilience of crops to climate change through breeding and/or engineering, we conducted a transcriptomic analysis of different soybean (Glycine max) tissues to WD, HS, and WD + HS. Here we present a reference transcriptomic dataset that includes the response of soybean leaf, pod, anther, stigma, ovary, and sepal to WD, HS, and WD + HS conditions. Mining this dataset for the expression pattern of different stress response transcripts revealed that each tissue had a unique transcriptomic response to each of the different stress conditions. This finding is important as it suggests that enhancing the overall resilience of crops to climate change could require a coordinated approach that simultaneously alters the expression of different groups of transcripts in different tissues in a stress-specific manner.
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Affiliation(s)
- Ranjita Sinha
- Division of Plant Science and Technology, College of Agriculture Food and Natural Resources and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, 65211, USA
| | - Sai Preethi Induri
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, 65211, USA
| | - María Ángeles Peláez-Vico
- Division of Plant Science and Technology, College of Agriculture Food and Natural Resources and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, 65211, USA
| | - Adama Tukuli
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, 65211, USA
| | - Benjamin Shostak
- Division of Plant Science and Technology, College of Agriculture Food and Natural Resources and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, 65211, USA
| | - Sara I Zandalinas
- Department of Biology, Biochemistry and Environmental Sciences, University Jaume I, Av. de Vicent Sos Baynat, s/n, Castelló de la Plana, 12071, Spain
| | - Trupti Joshi
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, 65211, USA
- Institute for Data Science and Informatics and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, 65211, USA
- Department of Health Management and Informatics, and Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, 65211, USA
| | - Felix B Fritschi
- Division of Plant Science and Technology, College of Agriculture Food and Natural Resources and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, 65211, USA
| | - Ron Mittler
- Division of Plant Science and Technology, College of Agriculture Food and Natural Resources and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, 65211, USA
- Department of Surgery, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, 65201, USA
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23
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Bollier N, Micol-Ponce R, Dakdaki A, Maza E, Zouine M, Djari A, Bouzayen M, Chevalier C, Delmas F, Gonzalez N, Hernould M. Various tomato cultivars display contrasting morphological and molecular responses to a chronic heat stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1278608. [PMID: 37965003 PMCID: PMC10642206 DOI: 10.3389/fpls.2023.1278608] [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: 08/16/2023] [Accepted: 10/06/2023] [Indexed: 11/16/2023]
Abstract
Climate change is one of the biggest threats that human society currently needs to face. Heat waves associated with global warming negatively affect plant growth and development and will increase in intensity and frequency in the coming years. Tomato is one of the most produced and consumed fruit in the world but remarkable yield losses occur every year due to the sensitivity of many cultivars to heat stress (HS). New insights into how tomato plants are responding to HS will contribute to the development of cultivars with high yields under harsh temperature conditions. In this study, the analysis of microsporogenesis and pollen germination rate of eleven tomato cultivars after exposure to a chronic HS revealed differences between genotypes. Pollen development was either delayed and/or desynchronized by HS depending on the cultivar considered. In addition, except for two, pollen germination was abolished by HS in all cultivars. The transcriptome of floral buds at two developmental stages (tetrad and pollen floral buds) of five cultivars revealed common and specific molecular responses implemented by tomato cultivars to cope with chronic HS. These data provide valuable insights into the diversity of the genetic response of floral buds from different cultivars to HS and may contribute to the development of future climate resilient tomato varieties.
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Affiliation(s)
- N. Bollier
- INRAE, Université de Bordeaux, BFP, Bordeaux, France
| | | | - A. Dakdaki
- INRAE, Université de Bordeaux, BFP, Bordeaux, France
| | - E. Maza
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Toulouse INP, Toulouse, France
| | - M. Zouine
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Toulouse INP, Toulouse, France
| | - A. Djari
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Toulouse INP, Toulouse, France
| | - M. Bouzayen
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Toulouse INP, Toulouse, France
| | - C. Chevalier
- INRAE, Université de Bordeaux, BFP, Bordeaux, France
| | - F. Delmas
- INRAE, Université de Bordeaux, BFP, Bordeaux, France
| | - N. Gonzalez
- INRAE, Université de Bordeaux, BFP, Bordeaux, France
| | - M. Hernould
- INRAE, Université de Bordeaux, BFP, Bordeaux, France
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24
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Sharma RK, Dhillon J, Kumar P, Bheemanahalli R, Li X, Cox MS, Reddy KN. Climate trends and maize production nexus in Mississippi: empirical evidence from ARDL modelling. Sci Rep 2023; 13:16641. [PMID: 37789065 PMCID: PMC10547789 DOI: 10.1038/s41598-023-43528-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/25/2023] [Indexed: 10/05/2023] Open
Abstract
Climate change poses a significant threat to agriculture. However, climatic trends and their impact on Mississippi (MS) maize (Zea mays L.) are unknown. The objectives were to: (i) analyze trends in climatic variables (1970 to 2020) using Mann-Kendall and Sen slope method, (ii) quantify the impact of climate change on maize yield in short and long run using the auto-regressive distributive lag (ARDL) model, and (iii) categorize the critical months for maize-climate link using Pearson's correlation matrix. The climatic variables considered were maximum temperature (Tmax), minimum temperature (Tmin), diurnal temperature range (DTR), precipitation (PT), relative humidity (RH), and carbon emissions (CO2). The pre-analysis, post-analysis, and model robustness statistical tests were verified, and all conditions were met. A significant upward trend in Tmax (0.13 °C/decade), Tmin (0.27 °C/decade), and CO2 (5.1 units/decade), and a downward trend in DTR ( - 0.15 °C/decade) were noted. The PT and RH insignificantly increased by 4.32 mm and 0.11% per decade, respectively. The ARDL model explained 76.6% of the total variations in maize yield. Notably, the maize yield had a negative correlation with Tmax for June, and July, with PT in August, and with DTR for June, July, and August, whereas a positive correlation was noted with Tmin in June, July, and August. Overall, a unit change in Tmax reduced the maize yield by 7.39% and 26.33%, and a unit change in PT reduced it by 0.65% and 2.69% in the short and long run, respectively. However, a unit change in Tmin, and CO2 emissions increased maize yield by 20.68% and 0.63% in the long run with no short run effect. Overall, it is imperative to reassess the agronomic management strategies, developing and testing cultivars adaptable to the revealed climatic trend, with ability to withstand severe weather conditions in ensuring sustainable maize production.
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Affiliation(s)
| | - Jagmandeep Dhillon
- Department of Plant and Soil Sciences, Mississippi State University, Mississippi, USA.
| | - Pushp Kumar
- Department of Economics, Manipal University Jaipur, Dhami Kalan, Rajasthan, India
| | - Raju Bheemanahalli
- Department of Plant and Soil Sciences, Mississippi State University, Mississippi, USA
| | - Xiaofei Li
- Department of Agricultural Economics, Mississippi State University, Mississippi, USA
| | - Michael S Cox
- Department of Plant and Soil Sciences, Mississippi State University, Mississippi, USA
| | - Krishna N Reddy
- Crop Production Systems Research Unit, United States Department of Agriculture (USDA)-Agricultural Research Service (ARS), Stoneville, MS, USA
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25
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Zhao J, Zhang C, Li S, Yuan M, Mu W, Yang J, Ma Y, Guan C, Ma C. Changes in m 6A RNA methylation are associated with male sterility in wolfberry. BMC PLANT BIOLOGY 2023; 23:456. [PMID: 37770861 PMCID: PMC10540408 DOI: 10.1186/s12870-023-04458-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/12/2023] [Indexed: 09/30/2023]
Abstract
BACKGROUND N6-methyladenosine (m6A) modification is the most abundant type of RNA modification in eukaryotic cells, playing pivotal roles in multiple plant growth and development processes. Yet the potential role of m6A in conferring the trait of male sterility in plants remains unknown. RESULTS In this study, we performed RNA-sequencing (RNA-Seq) and m6A-sequencing (m6A-Seq) of RNAs obtained from the anther tissue of two wolfberry lines: 'Ningqi No.1' (LB1) and its natural male sterile mutant 'Ningqi No.5' (LB5). Based on the newly assembled transcriptome, we established transcriptome-wide m6A maps for LB1 and LB5 at the single nucleus pollen stage. We found that the gene XLOC_021201, a homolog of m6A eraser-related gene ALKBH10 in Arabidopsis thaliana, was significantly differentially expressed between LB1 and LB5. We also identified 1642 and 563 m6A-modified genes with hypermethylated and hypomethylated patterns, respectively, in LB1 compared with LB5. We found the hypermethylated genes significantly enriched in biological processes related to energy metabolism and lipid metabolism, while hypomethylation genes were mainly linked to cell cycle process, gametophyte development, and reproductive process. Among these 2205 differentially m6A methylated genes, 13.74% (303 of 2205) were differentially expressed in LB1 vis-à-vis LB5. CONCLUSIONS This study constructs the first m6A transcriptome map of wolfberry and establishes an association between m6A and the trait of male sterility in wolfberry.
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Affiliation(s)
- Jiawen Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chujun Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Sifan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Mengmeng Yuan
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Wenlan Mu
- College of Life Science, Ningxia University, Yinchuan, Ningxia, 750021, China
| | - Jing Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yutong Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Cuiping Guan
- College of Life Science, Ningxia University, Yinchuan, Ningxia, 750021, China.
| | - Chuang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, Center of Bioinformatics, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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26
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Savani KR, Gajera HP, Hirpara DG, Savaliya DD, Kandoliya UK. Salicylic acid-functionalised chitosan nanoparticles restore impaired sucrose metabolism in the developing anther of cotton ( Gossypium hirsutum) under heat stress. FUNCTIONAL PLANT BIOLOGY : FPB 2023; 50:736-751. [PMID: 37536348 DOI: 10.1071/fp22309] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 07/15/2023] [Indexed: 08/05/2023]
Abstract
Nanotechnology provides tremendous potential in agriculture, mitigating climate change impact and improving abiotic stress management strategy. Chitosan nanoparticles (NCS) were synthesised using the ion gelation method and characterised for size (75.5nm in particle size analyser), shape (spherical under scanning electron microscopy) and stability (132.2mV zeta potential). Further, salicylic acid was incorporated into NCS to craft salicylic acid-functionalised chitosan nanoparticles (SA-NCS) and illustrated for size (517nm), shape (spherical) and stability (197.1mV). The influence of the exogenous application of SA-NCS (0.08%) was studied at the reproductive stage of three genotypes of cotton (Gossypium hirsutum ): (1) heat-tolerant Solar-651 BGII; (2) moderately heat-tolerant Solar-701 BGII; and (3) heat-susceptible Solar-805 BGII, exposed to different temperature regimes: (1) H1 (optimal), 32/20±2°C; (2) H2 (sub-optimal), 38/24±2°C; H3 (supra-optimal), 45/30±2°C. Heat stress significantly reduces carbon-fixing Rubisco, enzymes related to sucrose metabolism and pollen tube length. Considering three genotypes and reproductive stages (sepal and anther tissues), activities of Rubisco (sepals), invertase (sepals), sucrose phosphate synthase (anthers), sucrose content (sepals) and pollen tube length were elevated under high-temperature regimes, signifying better source to sink transposition of sucrose influenced by SA-NCS. The study provides new insights into SA-NCS to improve source-sink imbalance and restore sucrose metabolism for better growth of reproductive structure under heat stress in cotton.
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Affiliation(s)
- Khyati R Savani
- Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh 362 001, Gujarat, India
| | - H P Gajera
- Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh 362 001, Gujarat, India
| | - Darshna G Hirpara
- Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh 362 001, Gujarat, India
| | - Disha D Savaliya
- Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh 362 001, Gujarat, India
| | - U K Kandoliya
- Department of Biotechnology, College of Agriculture, Junagadh Agricultural University, Junagadh 362 001, Gujarat, India
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27
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Zuo DD, Ahammed GJ, Guo DL. Plant transcriptional memory and associated mechanism of abiotic stress tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107917. [PMID: 37523825 DOI: 10.1016/j.plaphy.2023.107917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 07/02/2023] [Accepted: 07/26/2023] [Indexed: 08/02/2023]
Abstract
Plants face various adverse environmental conditions, particularly with the ongoing changes in global climate, which drastically affect the growth, development and productivity of crops. To cope with these stresses, plants have evolved complex mechanisms, and one of the crucial ways is to develop transcriptional memories from stress exposure. This induced learning enables plants to better and more strongly restart the response and adaptation mechanism to stress when similar or dissimilar stresses reoccur. Understanding the molecular mechanism behind plant transcriptional memory of stress can provide a theoretical basis for breeding stress-tolerant crops with resilience to future climates. Here we review the recent research progress on the transcriptional memory of plants under various stresses and the applications of underlying mechanisms for sustainable agricultural production. We propose that a thorough understanding of plant transcriptional memory is crucial for both agronomic management and resistant breeding, and thus may help to improve agricultural yield and quality under changing climatic conditions.
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Affiliation(s)
- Ding-Ding Zuo
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, China; Henan Engineering Technology Research Center of Quality Regulation of Horticultural Plants, Luoyang, 471023, China
| | - Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, China; Henan Engineering Technology Research Center of Quality Regulation of Horticultural Plants, Luoyang, 471023, China
| | - Da-Long Guo
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, China; Henan Engineering Technology Research Center of Quality Regulation of Horticultural Plants, Luoyang, 471023, China.
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28
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Simanjuntak C, Gaiser T, Ahrends HE, Ceglar A, Singh M, Ewert F, Srivastava AK. Impact of climate extreme events and their causality on maize yield in South Africa. Sci Rep 2023; 13:12462. [PMID: 37528122 PMCID: PMC10393995 DOI: 10.1038/s41598-023-38921-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 07/17/2023] [Indexed: 08/03/2023] Open
Abstract
Extreme climate events can have a significant negative impact on maize productivity, resulting in food scarcity and socioeconomic losses. Thus, quantifying their effect is needed for developing future adaptation and mitigation strategies, especially for countries relying on maize as a staple crop, such as South Africa. While several studies have analyzed the impact of climate extremes on maize yields in South Africa, little is known on the quantitative contribution of combined extreme events to maize yield variability and the causality link of extreme events. This study uses existing stress indices to investigate temporal and spatial patterns of heatwaves, drought, and extreme precipitation during maize growing season between 1986/87 and 2015/16 for South Africa provinces and at national level and quantifies their contribution to yield variability. A causal discovery algorithm was applied to investigate the causal relationship among extreme events. At the province and national levels, heatwaves and extreme precipitation showed no significant trend. However, drought severity increased in several provinces. The modified Combined Stress Index (CSIm) model showed that the maize yield nationwide was associated with drought events (explaining 25% of maize yield variability). Heatwaves has significant influence on maize yield variability (35%) in Free State. In North West province, the maize yield variability (46%) was sensitive to the combination of drought and extreme precipitation. The causal analysis suggests that the occurrence of heatwaves intensified drought, while a causal link between heatwaves and extreme precipitation was not detected. The presented findings provide a deeper insight into the sensitivity of yield data to climate extremes and serve as a basis for future studies on maize yield anomalies.
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Affiliation(s)
- Christian Simanjuntak
- Institute of Crop Science and Resource Conservation, University of Bonn, Katzenburgweg 5, 53115, Bonn, Germany.
| | - Thomas Gaiser
- Institute of Crop Science and Resource Conservation, University of Bonn, Katzenburgweg 5, 53115, Bonn, Germany
| | - Hella Ellen Ahrends
- Department of Agricultural Sciences, University of Helsinki, Koetilantie 5, 00014, Helsinki, Finland
| | - Andrej Ceglar
- Climate Change Centre of the European Central Bank, Sonnemannstrasse 20, 60314, Frankfurt Am Main, Germany
| | - Manmeet Singh
- Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, India
| | - Frank Ewert
- Institute of Crop Science and Resource Conservation, University of Bonn, Katzenburgweg 5, 53115, Bonn, Germany
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Straße 84, 15374, Müncheberg, Germany
| | - Amit Kumar Srivastava
- Institute of Crop Science and Resource Conservation, University of Bonn, Katzenburgweg 5, 53115, Bonn, Germany
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29
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Liu P, Yin B, Gu L, Zhang S, Ren J, Wang Y, Duan W, Zhen W. Heat stress affects tassel development and reduces the kernel number of summer maize. FRONTIERS IN PLANT SCIENCE 2023; 14:1186921. [PMID: 37351221 PMCID: PMC10282950 DOI: 10.3389/fpls.2023.1186921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 03/28/2023] [Indexed: 06/24/2023]
Abstract
Maize grain yield is drastically reduced by heat stress (HTS) during anthesis and early grain filling. However, the mechanism of HTS in reproductive organs and kernel numbers remains poorly understood. From 2018 to 2020, two maize varieties (ND372, heat tolerant; and XY335, heat sensitive) and two temperature regimens (HTS, heat stress; and CK, natural control) were evaluated, resulting in four treatments (372CK, 372HTS, 335CK, and 335HTS). HTS was applied from the nine-leaf stage (V9) to the anthesis stage. Various morphological traits and physiological activities of the tassels, anthers, and pollen from the two varieties were evaluated to determine their correlation with kernel count. The results showed that HTS reduced the number of florets, tassel volume, and tassel length, but increased the number of tassel branches. HTS accelerates tassel degradation and reduces pollen weight, quantity, and viability. Deformation and reduction in length and volume due to HTS were observed in both the Nongda 372 (ND372) and Xianyu 335 (XY335) varieties, with the average reductions being 22.9% and 35.2%, respectively. The morphology of the anthers changed more conspicuously in XY335 maize. The number of kernels per spike was reduced in the HTS group compared with the CK group, with the ND372 and XY335 varieties showing reductions of 47.3% and 59.3%, respectively. The main factors underlying the decrease in yield caused by HTS were reductions in pollen quantity and weight, tassel rachis, and branch length. HTS had a greater effect on the anther shape, pollen viability, and phenotype of XY335 than on those of ND372. HTS had a greater impact on anther morphology, pollen viability, and the phenotype of XY335 but had no influence on the appearance or dissemination of pollen from tassel.
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Affiliation(s)
- Pan Liu
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
| | - Baozhong Yin
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Limin Gu
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
| | - Shaoyun Zhang
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
| | - Jianhong Ren
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
| | - Yandong Wang
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding, China
| | - Weiwei Duan
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding, China
| | - Wenchao Zhen
- College of Agronomy, Hebei Agricultural University, Baoding, China
- Key Laboratory of North China Water saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, China
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding, China
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30
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Xie E, Chen J, Wang B, Shen Y, Tang D, Du G, Li Y, Cheng Z. The transcribed centromeric gene OsMRPL15 is essential for pollen development in rice. PLANT PHYSIOLOGY 2023; 192:1063-1079. [PMID: 36905369 PMCID: PMC10231452 DOI: 10.1093/plphys/kiad153] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 01/19/2023] [Accepted: 02/15/2023] [Indexed: 06/01/2023]
Abstract
Centromeres consist of highly repetitive sequences that are challenging to map, clone, and sequence. Active genes exist in centromeric regions, but their biological functions are difficult to explore owing to extreme suppression of recombination in these regions. In this study, we used the CRISPR/Cas9 system to knock out the transcribed gene Mitochondrial Ribosomal Protein L15 (OsMRPL15), located in the centromeric region of rice (Oryza sativa) chromosome 8, resulting in gametophyte sterility. Osmrpl15 pollen was completely sterile, with abnormalities appearing at the tricellular stage including the absence of starch granules and disrupted mitochondrial structure. Loss of OsMRPL15 caused abnormal accumulation of mitoribosomal proteins and large subunit rRNA in pollen mitochondria. Moreover, the biosynthesis of several proteins in mitochondria was defective, and expression of mitochondrial genes was upregulated at the mRNA level. Osmrpl15 pollen contained smaller amounts of intermediates related to starch metabolism than wild-type pollen, while biosynthesis of several amino acids was upregulated, possibly to compensate for defective mitochondrial protein biosynthesis and initiate consumption of carbohydrates necessary for starch biosynthesis. These results provide further insight into how defects in mitoribosome development cause gametophyte male sterility.
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Affiliation(s)
- En Xie
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Jiawei Chen
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Bingxin Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Yi Shen
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Ding Tang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Guijie Du
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Yafei Li
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhukuan Cheng
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
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31
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Goel K, Kundu P, Sharma P, Zinta G. Thermosensitivity of pollen: a molecular perspective. PLANT CELL REPORTS 2023; 42:843-857. [PMID: 37029819 DOI: 10.1007/s00299-023-03003-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/04/2023] [Indexed: 05/06/2023]
Abstract
A current trend in climate comprises adverse weather anomalies with more frequent and intense temperature events. Heatwaves are a serious threat to global food security because of the susceptibility of crop plants to high temperatures. Among various developmental stages of plants, even a slight rise in temperature during reproductive development proves detrimental, thus making sexual reproduction heat vulnerable. In this context, male gametophyte or pollen development stages are the most sensitive ones. High-temperature exposure induces pollen abortion, reducing pollen viability and germination rate with a concomitant effect on seed yield. This review summarizes the ultrastructural, morphological, biochemical, and molecular changes underpinning high temperature-induced aberrations in male gametophytes. Specifically, we highlight the temperature sensing cascade operating in pollen, involving reactive oxygen species (ROS), heat shock factors (HSFs), a hormones and transcriptional regulatory network. We also emphasize integrating various omics approaches to decipher the molecular events triggered by heat stress in pollen. The knowledge of genes, proteins, and metabolites conferring thermotolerance in reproductive tissues can be utilized to breed/engineer thermotolerant crops to ensure food security.
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Affiliation(s)
- Komal Goel
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Pravesh Kundu
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Paras Sharma
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India
| | - Gaurav Zinta
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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Ding X, Guo J, Lv M, Wang H, Sheng Y, Liu Y, Gai J, Yang S. The miR156b-GmSPL2b module mediates male fertility regulation of cytoplasmic male sterility-based restorer line under high-temperature stress in soybean. PLANT BIOTECHNOLOGY JOURNAL 2023. [PMID: 37057908 PMCID: PMC10363761 DOI: 10.1111/pbi.14056] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 02/17/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
High-temperature (HT) stress at flowering stage causes significant damage to soybean, including pollen abortion and fertilization failure, but few genes involved in male fertility regulation under HT stress in soybean have been characterized. Here, we demonstrated that miR156b-GmSPL2b module involved in male fertility regulation of soybean cytoplasmic male sterility (CMS)-based restorer line under HT stress. Overexpression of miR156b decreased male fertility in soybean CMS-based restorer line and its hybrid F1 with CMS line under HT stress. RNA-seq analysis found that miR156b mediated male fertility regulation in soybean under HT stress by regulating the expression of pollen development and HT response related genes. Metabolomic analysis of miR156bOE revealed reduction in flavonoid content under HT stress. Integrated transcriptomic and metabolomic analysis showed that the overexpression of miR156b caused flavonoid metabolism disorder in soybean flower bud under HT stress. Knockout of GmSPL2b also decreased the thermotolerance of soybean CMS-based restorer line during flowering. Moreover, GmSPL2b turned out to be directly bounded to the promoter of GmHSFA6b. Further verification indicated that GmHSFA6b overexpression enhanced HT tolerance in Arabidopsis during flowering. Substance content and gene expression analysis revealed that miR156b-GmSPL2b may mediate reactive oxygen species clearance by regulating flavonoid metabolism, thus participating in the regulation of male fertility in soybean under HT stress. This study not only provided important progress for understanding the molecular mechanism of miR156b-GmSPL2b regulating the male fertility of soybean CMS-based restorer line under HT stress, but also provided genetic resources and theoretical basis for creating HT-tolerant strong restorer lines.
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Affiliation(s)
- Xianlong Ding
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Jinfeng Guo
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Menglin Lv
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Hongjie Wang
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ying Sheng
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ying Liu
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Junyi Gai
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Shouping Yang
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
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Khan AH, Min L, Ma Y, Zeeshan M, Jin S, Zhang X. High-temperature stress in crops: male sterility, yield loss and potential remedy approaches. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:680-697. [PMID: 36221230 PMCID: PMC10037161 DOI: 10.1111/pbi.13946] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 10/06/2022] [Accepted: 10/10/2022] [Indexed: 05/16/2023]
Abstract
Global food security is one of the utmost essential challenges in the 21st century in providing enough food for the growing population while coping with the already stressed environment. High temperature (HT) is one of the main factors affecting plant growth, development and reproduction and causes male sterility in plants. In male reproductive tissues, metabolic changes induced by HT involve carbohydrates, lipids, hormones, epigenetics and reactive oxygen species, leading to male sterility and ultimately reducing yield. Understanding the mechanism and genes involved in these pathways during the HT stress response will provide a new path to improve crops by using molecular breeding and biotechnological approaches. Moreover, this review provides insight into male sterility and integrates this with suggested strategies to enhance crop tolerance under HT stress conditions at the reproductive stage.
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Affiliation(s)
- Aamir Hamid Khan
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Ling Min
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Yizan Ma
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Muhammad Zeeshan
- Guangxi Key Laboratory for Agro‐Environment and Agro‐Product Safety, Guangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, College of AgricultureGuanxi UniversityNanningChina
| | - Shuangxia Jin
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanChina
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34
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Liu X, Gu M, Lv X, Sheng D, Wang X, Wang P, Huang S. High temperature defense-related pathways, mediating lodicule expansion and spikelet opening in maize tassel. JOURNAL OF EXPERIMENTAL BOTANY 2023:erad115. [PMID: 36967717 DOI: 10.1093/jxb/erad115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Indexed: 06/18/2023]
Abstract
High temperature (HT) at flowering hinders pollen shedding, whereas mechanisms underlying stress-induced spikelet closure are poorly known in maize. Yield components, spikelet opening, and lodicule morphology/protein profiling upon HT stress during flowering were explored in maize inbred lines Chang 7-2 and Qi 319. HT induced spikelet closure and reduced pollen shed weight (PSW) and seed set. Qi 319 that had a 7-fold lower PSW than Chang 7-2 was more susceptible to HT. A small lodicule size reduced spikelet opening rate and angle, and more vascular bundles hastened lodicule shrinking in Qi 319. Lodicules were collected for proteomics. In HT-stressed lodicules, proteins involved in stress signal, cell wall, cell constructure, carbohydrate metabolism, and phytohormone signaling were associated with stress tolerance. Among these proteins, HT downregulated expression of ADP-ribosylation factor GTPase-activating protein domain2, SNAP receptor complex member11, and sterol methyltransferase2 in Qi 319 but not in Chang 7-2, agreeing well with protein abundance changes. Exogenous epibrassinolide enlarged spikelet opening angle and extended spikelet opening duration. These results suggest that dysfunction of actin cytoskeleton and membrane remodeling induced by HT likely limits lodicule expansion. Additionally, reduced vascular bundles in lodicule and application of epibrassinolide might confer spikelet tolerance to HT stress.
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Affiliation(s)
- Xiaoli Liu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Mingqi Gu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xuanlong Lv
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Dechang Sheng
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Xin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
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Mo Y, Li G, Liu L, Zhang Y, Li J, Yang M, Chen S, Lin Q, Fu G, Zheng D, Ling Y. OsGRF4AA compromises heat tolerance of developing pollen grains in rice. FRONTIERS IN PLANT SCIENCE 2023; 14:1121852. [PMID: 36909437 PMCID: PMC9992635 DOI: 10.3389/fpls.2023.1121852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
Extreme high temperature at the meiosis stage causes a severe decrease in spikelet fertility and grain yield in rice. The rice variety grain size on chromosome 2 (GS2) contains sequence variations of OsGRF4 (Oryza sativa growth-regulating factor 4; OsGRF4AA ), escaping the microRNA miR396-mediated degradation of this gene at the mRNA level. Accumulation of OsGRF4 enhances nitrogen usage and metabolism, and increases grain size and grain yield. In this study, we found that pollen viability and seed-setting rate under heat stress (HS) decreased more seriously in GS2 than in its comparator, Zhonghua 11 (ZH11). Transcriptomic analysis revealed that, following HS, genes related to carbohydrate metabolic processes were expressed and regulated differentially in the anthers of GS2 and ZH11. Moreover, the expression of genes involved in chloroplast development and photosynthesis, lipid metabolism, and key transcription factors, including eight male sterile genes, were inhibited by HS to a greater extent in GS2 than in ZH11. Interestingly, pre-mRNAs of OsGRF4, and a group of essential genes involved in development and fertilization, were differentially spliced in the anthers of GS2 and ZH11. Taken together, our results suggest that variation in OsGRF4 affects proper transcriptional and splicing regulation of genes under HS, and that this can be mediated by, and also feed back to, carbohydrate and nitrogen metabolism, resulting in a reduction in the heat tolerance of rice anthers.
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Affiliation(s)
- Yujian Mo
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
- South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center, Zhanjiang, China
| | - Guangyan Li
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Li Liu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Yingjie Zhang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Junyi Li
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Meizhen Yang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Shanlan Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Qiaoling Lin
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Guanfu Fu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Dianfeng Zheng
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
- South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center, Zhanjiang, China
| | - Yu Ling
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
- South China Branch of National Saline-Alkali Tolerant Rice Technology Innovation Center, Zhanjiang, China
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36
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Hydrogen Peroxide and GA 3 Levels Regulate the High Night Temperature Response in Pistils of Wheat ( Triticum aestivum L.). Antioxidants (Basel) 2023; 12:antiox12020342. [PMID: 36829898 PMCID: PMC9952169 DOI: 10.3390/antiox12020342] [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: 12/27/2022] [Revised: 01/19/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023] Open
Abstract
High night temperature (HNT) impairs crop productivity through the reproductive failure of gametes (pollen and pistil). Though female gametophyte (pistil) is an equal partner in the seed-set, the knowledge of the antioxidant system(s) and hormonal control of HNT tolerance or susceptibility of pistils is limited and lacking. The objectives of this study were to determine the antioxidant mechanism for homeostatic control of free radicals, and the involvement of abscisic acid (ABA) and gibberellic acid (GA3) in HNT stress protection in the wheat pistils of contrasting wheat genotypes. We hypothesized that HNT tolerance is attributed to the homeostatic control of reactive oxygen species (ROS) and hormonal readjustment in pistils of the tolerant genotype. The ears of two contrasting wheat genotypes-HD 2329 (susceptible) and Raj 3765 (tolerant) were subjected to two HNTs (+5 °C and +8 °C) over ambient, in the absence and presence of dimethylthiourea (DMTU), a chemical trap of hydrogen peroxide (H2O2). Results showed that HNTs significantly increased ROS in pistils of susceptible genotype HD 2329 to a relatively greater extent compared to tolerant genotype Raj 3765. The response was similar in the presence or absence of DMTU, but the H2O2 values were lower in the presence of DMTU. The ROS levels were balanced by increased activity of peroxidase under HNT to a greater extent in the tolerant genotype. Cytosolic glyceraldehyde-3-phosphate dehydrogenase (GAPC) activity was inversely related to H2O2 production within a critical range in Raj 3765, indicating its modulation by H2O2 levels as no change was observed at the transcriptional level. The hormonal status showed increased ABA and decreased GA3 contents with increasing temperature. Our study elucidates the role of H2O2 and GA3 in stress tolerance of pistils of tolerant genotype where GAPC acts as a ROS sensor due to H2O2-mediated decrease in its activity.
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Xing M, Peng Z, Guan C, Guan M. Comparative study on abortion characteristics of Nsa CMS and Pol CMS and analysis of long non-coding RNAs related to pollen abortion in Brassica napus. PLoS One 2023; 18:e0284287. [PMID: 37053132 PMCID: PMC10101420 DOI: 10.1371/journal.pone.0284287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
Cytoplasmic male sterile system (CMS) is one of the important methods for the utilization of heterosisin Brassica napus. The involvement of long non-coding RNAs (lncRNAs) in anther and pollen development in B.napus has been recognized, but there is little data on the involvement of lncRNAs in pollen abortion in different types of rapeseed CMS. The present study compared the cytological, physiological and biochemical characteristics of Nsa CMS (1258A) and Pol CMS (P5A) during pollen abortion, and high-throughput sequencing of flower buds of different sizes before and after pollen abortion. The results showed that insufficient energy supply was an important physiological basis for 1258A and P5A pollen abortion, and 1258A had excessive ROS (reactive oxygen species) accumulation in the stage of pollen abortion. Functional analysis showed that Starch and sucrose metabolism and Sulfur metabolism were significantly enriched before and after pollen abortion in 1258A and P5A, and a large number of genes were down-regulated. In 1258A, 227 lncRNAs had cis-targeting regulation, and 240 cis-target genes of the lncRNAs were identified. In P5A, 116 lncRNAs had cis-targeting regulation, and 101 cis-target genes of the lncRNAs were identified. There were five lncRNAs cis-target genes in 1258A and P5A during pollen abortion, and LOC106445716 encodes β-D-glucopyranosyl abscisate β-glucosidase and could regulate pollen abortion. Taken together, this study, provides a new perspective for lncRNAs to participate in the regulation of Nsa CMS and Pol CMS pollen abortion.
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Affiliation(s)
- Man Xing
- Hunan Branch of National Oilseed Crops Improvement Center, Changsha, China
- College of Agriculture, Hunan Agricultural University, Changsha, China
| | - Zechuan Peng
- Hunan Branch of National Oilseed Crops Improvement Center, Changsha, China
- College of Agriculture, Hunan Agricultural University, Changsha, China
| | - Chunyun Guan
- Hunan Branch of National Oilseed Crops Improvement Center, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha, China
| | - Mei Guan
- Hunan Branch of National Oilseed Crops Improvement Center, Changsha, China
- College of Agriculture, Hunan Agricultural University, Changsha, China
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha, China
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Chen L, Liang Z, Xie S, Liu W, Wang M, Yan J, Yang S, Jiang B, Peng Q, Lin Y. Responses of differential metabolites and pathways to high temperature in cucumber anther. FRONTIERS IN PLANT SCIENCE 2023; 14:1131735. [PMID: 37123826 PMCID: PMC10140443 DOI: 10.3389/fpls.2023.1131735] [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: 12/26/2022] [Accepted: 03/24/2023] [Indexed: 05/03/2023]
Abstract
Cucumber is one of the most important vegetable crops, which is widely planted all over the world. Cucumber always suffers from high-temperature stress in South China in summer. In this study, liquid chromatography-mass spectrometry (LC-MS) analysis was used to study the differential metabolites of cucumber anther between high-temperature (HT) stress and normal condition (CK). After HT, the pollen fertility was significantly reduced, and abnormal anther structures were observed by the paraffin section. In addition, the metabolomics analysis results showed that a total of 125 differential metabolites were identified after HT, consisting of 99 significantly upregulated and 26 significantly downregulated metabolites. Among these differential metabolites, a total of 26 related metabolic pathways were found, and four pathways showed significant differences, namely, porphyrin and chlorophyll metabolism; plant hormone signal transduction; amino sugar and nucleotide sugar metabolism; and glycine, serine, and threonine metabolism. In addition, pollen fertility was decreased by altering the metabolites of plant hormone signal transduction and amino acid and sugar metabolism pathway under HT. These results provide a comprehensive understanding of the metabolic changes in cucumber anther under HT.
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Affiliation(s)
- Lin Chen
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Zhaojun Liang
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Shuyan Xie
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Wenrui Liu
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Min Wang
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Jinqiang Yan
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Songguang Yang
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Biao Jiang
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Qingwu Peng
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - Yu’e Lin
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
- *Correspondence: Yu’e Lin,
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39
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Zhu F, Sun Y, Jadhav SS, Cheng Y, Alseekh S, Fernie AR. The Plant Metabolic Changes and the Physiological and Signaling Functions in the Responses to Abiotic Stress. Methods Mol Biol 2023; 2642:129-150. [PMID: 36944876 DOI: 10.1007/978-1-0716-3044-0_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Global climate change has altered, and will further alter, rainfall patterns and temperatures likely causing more frequent drought and heat waves, which will consequently exacerbate abiotic stresses of plants and significantly decrease the yield and quality of crops. On the one hand, the global demand for food is ever-increasing owing to the rapid increase of the human population. On the other hand, metabolic responses are one of the most important mechanisms by which plants adapt to and survive to abiotic stresses. Here we therefore summarize recent progresses including the plant primary and secondary metabolic responses to abiotic stresses and their function in plant resistance acting as antioxidants, osmoregulatory, and signaling factors, which enrich our knowledge concerning commonalities of plant metabolic responses to abiotic stresses, including their involvement in signaling processes. Finally, we discuss potential methods of metabolic fortification of crops in order to improve their abiotic stress tolerance.
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Affiliation(s)
- Feng Zhu
- National R&D Center for Citrus Preservation, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Yuming Sun
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
| | - Sagar Sudam Jadhav
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Yunjiang Cheng
- National R&D Center for Citrus Preservation, Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Saleh Alseekh
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany.
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria.
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Chen T, Ma J, Xu C, Jiang N, Li G, Fu W, Feng B, Wang D, Wu Z, Tao L, Fu G. Increased ATPase activity promotes heat-resistance, high-yield, and high-quality traits in rice by improving energy status. FRONTIERS IN PLANT SCIENCE 2022; 13:1035027. [PMID: 36600923 PMCID: PMC9806274 DOI: 10.3389/fpls.2022.1035027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 09/26/2022] [Indexed: 06/17/2023]
Abstract
Heat stress during the reproductive stage results in major losses in yield and quality, which might be mainly caused by an energy imbalance. However, how energy status affected heat response, yield and quality remains unclear. No relationships were observed among the heat resistance, yield, and quality of the forty-nine early rice cultivars under normal temperature conditions. However, two cultivars, Zhuliangyou30 (ZLY30) and Luliangyou35 (LLY35), differing in heat resistance, yield, and quality were detected. The yield was higher and the chalkiness degree was lower in ZLY30 than in LLY35. Decreases in yields and increases in the chalkiness degree with temperatures were more pronounced in LLY35 than in ZLY30. The accumulation and allocation (ratio of the panicle to the whole plant) of dry matter weight and non-structural carbohydrates were higher in ZLY30 than in LLY35 across all sowing times and temperatures. The accumulation and allocation of dry matter weight and non-structural carbohydrates in panicles were higher in ZLY30 than in LLY35. Similar patterns were observed in the relative expression levels of sucrose unloading related genes SUT1 and SUT2 in grains. The ATP content was higher in the grains of LLY35 than in ZLY30, whereas the ATPase activity, which determined the energy status, was significantly lower in the former than in the latter. Thus, increased ATPase activity, which improved the energy status of rice, was the factor mediating the balance among heat-resistance, high-yield, and high-quality traits in rice.
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Affiliation(s)
- Tingting Chen
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
- Agronomy College, Jilin Agricultural University, Changchun, China
| | - Jiaying Ma
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Chunmei Xu
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Ning Jiang
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Guangyan Li
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Agricultural College, Yangzhou University, Yangzhou, China
| | - Weimeng Fu
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Baohua Feng
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Danying Wang
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Zhihai Wu
- Agronomy College, Jilin Agricultural University, Changchun, China
| | - Longxing Tao
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Guanfu Fu
- National Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
- Agronomy College, Jilin Agricultural University, Changchun, China
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Hu M, Li Y, Zhang X, Song W, Jin W, Huang W, Zhao H. Maize sterility gene DRP1 encodes a desiccation-related protein that is critical for Ubisch bodies and pollen exine development. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6800-6815. [PMID: 35922377 DOI: 10.1093/jxb/erac331] [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: 05/01/2022] [Accepted: 07/30/2022] [Indexed: 06/15/2023]
Abstract
Desiccation tolerance is a remarkable feature of pollen, seeds, and resurrection-type plants. Exposure to desiccation stress can cause sporophytic defects, resulting in male sterility. Here, we report the novel maize sterility gene DRP1 (Desiccation-Related Protein 1), which was identified by bulked-segregant analysis sequencing and encodes a desiccation-related protein. Loss of function of DRP1 results in abnormal Ubisch bodies, defective tectum of the pollen exine, and complete male sterility. Our results suggest that DRP1 may facilitate anther dehydration to maintain appropriate water status. DRP1 is a secretory protein that is specifically expressed in the tapetum and microspore from the tetrad to the uninucleate microspore stage. Differentially expressed genes in drp1 are enriched in Gene Ontology terms for pollen exine formation, polysaccharide catabolic process, extracellular region, and response to heat. In addition, DRP1 is a target of selection that appears to have played an important role in the spread of maize from tropical/subtropical to temperate regions. Taken together, our results suggest that DRP1 encodes a desiccation-related protein whose loss of function causes male sterility. Our findings provide a potential genetic resource that may be used to design crops for heterosis utilization.
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Affiliation(s)
- Mingjian Hu
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
- State Key Laboratory of Wheat and Maize Crop Science and Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, China
| | - Yunfei Li
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
| | - Xiangbo Zhang
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
| | - Weibin Song
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, China
| | - Weiwei Jin
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
- College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin, China
| | - Wei Huang
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
| | - Haiming Zhao
- State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, China
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Li H, Tiwari M, Tang Y, Wang L, Yang S, Long H, Guo J, Wang Y, Wang H, Yang Q, Jagadish SVK, Shao R. Metabolomic and transcriptomic analyses reveal that sucrose synthase regulates maize pollen viability under heat and drought stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 246:114191. [PMID: 36265405 DOI: 10.1016/j.ecoenv.2022.114191] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/20/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Maize pollen is highly sensitive to heat and drought, but few studies have investigated the combined effects of heat and drought on pollen viability. In this study, pollen's structural and physiological characteristics were determined after heat, drought, and combined stressors. Furthermore, integrated metabolomic and transcriptomic analyses of maize pollen were conducted to identify potential mechanisms of stress responses. Tassel growth and spikelet development were considerably suppressed, pollen viability was negatively impacted, and pollen starch granules were depleted during anthesis under stress. The inhibitory effects were more significant due to combined stresses than to heat or drought individually. The metabolic analysis identified 71 important metabolites in the combined stress compared to the other treatments, including sugars and their derivatives related to pollen viability. Transcriptomics also revealed that carbohydrate metabolism was significantly altered under stress. Moreover, a comprehensive metabolome-transcriptome analysis identified a central mechanism in the biosynthesis of UDP-glucose involved in reducing the activity of sucrose synthase SH-1 (shrunken 1) and sus1 (sucrose synthase 1) that suppressed sucrose transfer to UDP-glucose, leading to pollen viability exhaustion under stress. In conclusion, the lower pollen viability after heat and drought stress was associated with poor sucrose synthase activity due to the stress treatments.
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Affiliation(s)
- Hongwei Li
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Manish Tiwari
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA.
| | - Yulou Tang
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Lijuan Wang
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Sen Yang
- The Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences, Beijing 100101, China.
| | - Haochi Long
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Jiameng Guo
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Yongchao Wang
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Hao Wang
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - Qinghua Yang
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
| | - S V Krishna Jagadish
- Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79410, USA.
| | - Ruixin Shao
- National Key Laboratory of Wheat and Maize Crop Science/Henan Engineering Research Center of Crop Chemical Control/Key Laboratory of Regulating and Controlling Crop Growth and Development, Ministry of Education, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
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Urfan M, Hakla HR, Sharma S, Khajuria M, Satbhai SB, Vyas D, Bhougal S, Yadav NS, Pal S. Paclobutrazol improves surface water use efficiency by regulating allometric trait behavior in maize. CHEMOSPHERE 2022; 307:135958. [PMID: 35952796 DOI: 10.1016/j.chemosphere.2022.135958] [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: 04/11/2022] [Revised: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Paclobutrazol (PBZ) role in drought management of maize is least understood. In maize, root traits are linked with surface water management. Over three years, early and terminal deficit irrigation (EDI and TDI) with or without PBZ were imposed on DKC-9144 and PG-2475 maize varieties. Several allometric parameters viz. stem height, stem diameter, leaf area and root traits along with physiological processes were measured. Implication of these parameters in the management of soil surface irrigation in terms of water use efficiency (WUE) was demonstrated in maize. Increased number of lateral roots and root number density in DKC-9144 provided more surface area for water absorption for better management of EDI. Root growth rates showed a similar pattern with root length, root surface areas, and root numbers in EDI. Elevated expressions of ZmRTCL, ZmRTCS and ZmARF34 in EDI and EDI plus PBZ were associated with seminal roots and root laterals initiation. Under TDI alone or in combination with PBZ, root lengths (BRL, CRL, SRL) and root surface areas varied in DKC-9144 and PG-2475 over control. Furthermore, correlation analysis showed that decrease in WUE under TDI was significantly associated with a reduction in stem thickness and leaf surface area. For WUE_N in TDI and PBZ plus TDI, structural equation modelling proposed, brace root surface area (BRSA_N) as a positive contributor, while a negative contributor was seminal root surface area (SRSA_N). Present study explained the importance of specific root traits and their association with other allometric parameters for improving WUE in DKC-9144 variety of maize and the crop in general.
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Affiliation(s)
- Mohammad Urfan
- Plant Physiology Laboratory, Department of Botany, University of Jammu, Jammu, 180006, India.
| | - Haroon Rashid Hakla
- Plant Physiology Laboratory, Department of Botany, University of Jammu, Jammu, 180006, India.
| | - Shubham Sharma
- Plant Physiology Laboratory, Department of Botany, University of Jammu, Jammu, 180006, India.
| | - Manu Khajuria
- Biodiversity and Applied Botany Division, CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India.
| | - Santosh B Satbhai
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER), Mohali, SAS Nagar, Punjab, 140406, India.
| | - Dhiraj Vyas
- Biodiversity and Applied Botany Division, CSIR- Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India.
| | - Sunil Bhougal
- Department of Statistics, University of Jammu, Jammu, 180006, India.
| | - Narendra Singh Yadav
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, 403587, Canada.
| | - Sikander Pal
- Plant Physiology Laboratory, Department of Botany, University of Jammu, Jammu, 180006, India.
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Xie C, Yang L, Jia G, Yan K, Zhang S, Yang G, Wu C, Gai Y, Zheng C, Huang J. Maize HEAT UP-REGULATED GENE 1 plays vital roles in heat stress tolerance. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6417-6433. [PMID: 35709944 DOI: 10.1093/jxb/erac262] [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: 02/22/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Increasing temperature is one of the major threats to maize growth and yield globally. Under heat stress conditions, intracellular protein homeostasis is seriously disturbed, leading to accumulation of abnormally folded proteins, especially in the endoplasmic reticulum (ER). Molecular chaperones are vital players in the renaturation process and in preventing protein aggregation. However, heat stress tolerance-associated chaperones are not well documented in maize. Here, we characterized the biological roles of HEAT UP-REGULATED GENE 1 (ZmHUG1) in maize. ZmHUG1 encodes a heat-inducible holdase-type molecular chaperone localized in the ER. Knockout mutant of ZmHUG1 exhibited remarkably enhanced sensitivity to heat stress. Accordingly, the zmhug1 mutant showed severe ER stress under high temperature. MAIZE PRENYLATED RAB ACCEPTOR 1.C1 (ZmPRA1.C1) was identified as a client of ZmHUG1, and heat-induced aggregation of ZmPRA1.C1 was accelerated in the zmhug1 mutant. Furthermore, the expression of ZmHUG1 was rapidly transactivated by ER stress sensor BASIC LEUCINE ZIPPER DOMAIN 60 (bZIP60) when heat stress occurred. This study reveals a ZmHUG1-based thermo-protective mechanism in maize.
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Affiliation(s)
- Chen Xie
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Liu Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Guixian Jia
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Kang Yan
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Shizhong Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Guodong Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Changai Wu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Yingping Gai
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Chengchao Zheng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Jinguang Huang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
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Guo J, Wang Z, Qu L, Hu Y, Lu D. Transcriptomic and alternative splicing analyses provide insights into the roles of exogenous salicylic acid ameliorating waxy maize seedling growth under heat stress. BMC PLANT BIOLOGY 2022; 22:432. [PMID: 36076169 PMCID: PMC9461148 DOI: 10.1186/s12870-022-03822-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Salicylic acid (SA) is a phytohormone which works to regulate the abiotic stress response of plants. However, the molecular mechanism by which SA mediates heat tolerance in waxy maize (Zea mays L. sinsensis Kulesh) remains unknown. RESULTS Two varieties of waxy maize seedlings, heat-tolerant 'Yunuo7' (Y7) and heat-sensitive 'Suyunuo5' (S5), were pretreated with SA prior to heat stress (HTS). After treatment, physiological and transcriptomic changes were analyzed. Compared with HTS, the exogenous application of SA enhanced the shoot dry weight, the activities of antioxidant enzymes (e.g., SOD, POD, CAT and APX), and the concentration of endogenous phytohormones (e.g., SA, ABA, IAA, GA3), while decreased the MDA content. Transcriptome analysis showed that the number of differentially expressed genes (DEGs) identified in the control (CK) vs HTS and HTS vs HTS + SA comparisons were more in S5 than in Y7. HTS induced the downregulation of genes involved in photosynthesis and the upregulation of genes encoding heat shock transcription factors (HSFs) and heat shock proteins (HSPs). Compared with HTS, SA pretreatment reversed the expression of 5 photosynthesis-related genes, 26 phytohormone-related genes, and all genes encoding HSFs and HSPs in S5. Furthermore, the number of alternative splicing (AS) events increased under HTS treatment for both varieties, while decreased under SA pretreatment of S5. Differentially spliced genes (DSGs) showed little overlap with DEGs, and DEGs and DSGs differed significantly in functional enrichment. CONCLUSIONS Physiological and transcriptional together indicated that HTS and SA pretreatment had a greater effect on S5 than Y7. Additionally, it appears that transcriptional regulation and AS work synergistically to enhance thermotolerance in heat-sensitive waxy maize. Our study revealed the regulatory effects and underlying molecular mechanisms of SA on waxy maize seedling under HTS.
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Affiliation(s)
- Jian Guo
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College of Yangzhou University, Yangzhou, 225009, People's Republic of China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Zitao Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College of Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Lingling Qu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College of Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Yifan Hu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College of Yangzhou University, Yangzhou, 225009, People's Republic of China
| | - Dalei Lu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College of Yangzhou University, Yangzhou, 225009, People's Republic of China.
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, People's Republic of China.
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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Zhang Y, Dai T, Liu Y, Wang J, Wang Q, Zhu W. Effect of Exogenous Glycine Betaine on the Germination of Tomato Seeds under Cold Stress. Int J Mol Sci 2022; 23:ijms231810474. [PMID: 36142386 PMCID: PMC9502054 DOI: 10.3390/ijms231810474] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/30/2022] [Accepted: 09/07/2022] [Indexed: 11/16/2022] Open
Abstract
Cold stress is known to influence tomato growth, development, and yield. In this study, we analyzed the germination of tomato seeds treated with exogenous glycine betaine (GB) at a low temperature (14 °C). The results showed that cold stress inhibited tomato seed germination, and pretreatment with exogenous GB reduced this inhibition and enhanced the germination rate (GR), germination index (GI), and viability of tomato seeds at low temperatures. Analysis of gene expression and metabolism revealed that GB positively regulated endogenous hormone gibberellin (GA) content and negatively regulated abscisic acid (ABA) content, while GB reduced the starch content in the seeds by up-regulating the amylase gene expression. Gene expression analysis showed that the key genes (SlSOD, SlPOD, and SlchlAPX) involved in reactive oxygen species (ROS) scavenging systems were up-regulated in GB-pretreated tomato seeds compared with the control. At the same time, levels of malondialdehyde and hydrogen peroxide were significantly lower, while the proline content and peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) levels were elevated compared with those in the control. These results demonstrate that exogenous GB as a positive regulator effectively alleviated the inhibition of tomato seed germination under cold stress by different signal pathways.
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Affiliation(s)
- Yingying Zhang
- Shanghai Key Laboratory of Protected Horticulture Technology, The Protected Horticulture Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Taoyu Dai
- Shanghai Key Laboratory of Protected Horticulture Technology, The Protected Horticulture Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
- College of Life Science, Shanghai Normal University, Shanghai 201400, China
| | - Yahui Liu
- Shanghai Key Laboratory of Protected Horticulture Technology, The Protected Horticulture Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Jinyan Wang
- Innovation Center of Jiangsu, Academy of Agricultural Sciences, Nanjing 210014, China
| | - Quanhua Wang
- College of Life Science, Shanghai Normal University, Shanghai 201400, China
| | - Weimin Zhu
- Shanghai Key Laboratory of Protected Horticulture Technology, The Protected Horticulture Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
- Correspondence:
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Sprague SA, Tamang TM, Steiner T, Wu Q, Hu Y, Kakeshpour T, Park J, Yang J, Peng Z, Bergkamp B, Somayanda I, Peterson M, Oliveira Garcia E, Hao Y, St. Amand P, Bai G, Nakata PA, Rieu I, Jackson DP, Cheng N, Valent B, Hirschi KD, Jagadish SVK, Liu S, White FF, Park S. Redox-engineering enhances maize thermotolerance and grain yield in the field. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:1819-1832. [PMID: 35656643 PMCID: PMC9398381 DOI: 10.1111/pbi.13866] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/20/2022] [Accepted: 05/27/2022] [Indexed: 05/22/2023]
Abstract
Increasing populations and temperatures are expected to escalate food demands beyond production capacities, and the development of maize lines with better performance under heat stress is desirable. Here, we report that constitutive ectopic expression of a heterologous glutaredoxin S17 from Arabidopsis thaliana (AtGRXS17) can provide thermotolerance in maize through enhanced chaperone activity and modulation of heat stress-associated gene expression. The thermotolerant maize lines had increased protection against protein damage and yielded a sixfold increase in grain production in comparison to the non-transgenic counterparts under heat stress field conditions. The maize lines also displayed thermotolerance in the reproductive stages, resulting in improved pollen germination and the higher fidelity of fertilized ovules under heat stress conditions. Our results present a robust and simple strategy for meeting rising yield demands in maize and, possibly, other crop species in a warming global environment.
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Affiliation(s)
- Stuart A. Sprague
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
- Present address:
School of Agricultural SciencesNorthwest Missouri State UniversityMaryvilleMO64468USA
| | - Tej Man Tamang
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Trevor Steiner
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Qingyu Wu
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
- Present address:
Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing100081China
| | - Ying Hu
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
- Present address:
Department of Horticultural SciencesUniversity of FloridaGainesvilleFL32611USA
| | - Tayebeh Kakeshpour
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Jungeun Park
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Jian Yang
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | - Zhao Peng
- Department of Plant PathologyUniversity of FloridaGainesvilleFLUSA
| | - Blake Bergkamp
- Department of AgronomyKansas State UniversityManhattanKSUSA
| | - Impa Somayanda
- Department of AgronomyKansas State UniversityManhattanKSUSA
| | - Morgan Peterson
- United States Department of Agriculture/Agricultural Research Service, Hard Winter Wheat Genetics Research UnitKansas State UniversityManhattanKSUSA
| | | | - Yangfan Hao
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Paul St. Amand
- United States Department of Agriculture/Agricultural Research Service, Hard Winter Wheat Genetics Research UnitKansas State UniversityManhattanKSUSA
| | - Guihua Bai
- United States Department of Agriculture/Agricultural Research Service, Hard Winter Wheat Genetics Research UnitKansas State UniversityManhattanKSUSA
| | - Paul A. Nakata
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | - Ivo Rieu
- Department of Plant Systems Physiology, Radboud Institute for Biological and Environmental SciencesRadboud UniversityNijmegenThe Netherlands
| | | | - Ninghui Cheng
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | - Barbara Valent
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Kendal D. Hirschi
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | | | - Sanzhen Liu
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Frank F. White
- Department of Plant PathologyUniversity of FloridaGainesvilleFLUSA
| | - Sunghun Park
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
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Xu J, Jansma SY, Wolters-Arts M, de Groot PFM, Jansen MJ, Rieu I. Long-Term Mild Heat Causes Post-Mitotic Pollen Abortion Through a Local Effect on Flowers. FRONTIERS IN PLANT SCIENCE 2022; 13:925754. [PMID: 35898227 PMCID: PMC9310381 DOI: 10.3389/fpls.2022.925754] [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: 04/21/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
Crop reproductive success is significantly challenged by heatwaves, which are increasing in frequency and severity globally. Heat-induced male sterility is mainly due to aborted pollen development, but it is not clear whether this is through direct or systemic effects. Here, long-term mild heat (LTMH) treatment, mimicking a heatwave, was applied locally to tomato flowers or whole plants and followed up by cytological, transcriptomic, and biochemical analyses. By analyzing pollen viability, LTMH was shown to act directly on the flowers and not via effects on other plant tissue. The meiosis to early microspore stage of pollen development was the most sensitive to LTMH and 3 days of exposure around this period was sufficient to significantly reduce pollen viability at the flower anthesis stage. Extensive cytological analysis showed that abnormalities in pollen development could first be observed after pollen mitosis I, while no deviations in tapetum development were observed. Transcriptomic and biochemical analyses suggested that pollen development suffered from tapetal ER stress and that there was a limited role for oxidative stress. Our results provide the first evidence that heat acts directly on flowers to induce pollen sterility, and that the molecular-physiological responses of developing anthers to the LTMH are different from those to severe heat shock.
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49
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Liu H, Able AJ, Able JA. Priming crops for the future: rewiring stress memory. TRENDS IN PLANT SCIENCE 2022; 27:699-716. [PMID: 34906381 DOI: 10.1016/j.tplants.2021.11.015] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 11/10/2021] [Accepted: 11/17/2021] [Indexed: 05/12/2023]
Abstract
The agricultural sector must produce resilient and climate-smart crops to meet the increasing needs of global food production. Recent advancements in elucidating the mechanistic basis of plant stress memory have provided new opportunities for crop improvement. Stress memory-coordinated changes at the organismal, cellular, and various omics levels prepare plants to be more responsive to reoccurring stress within or across generation(s). The exposure to a primary stress, or stress priming, can also elicit a beneficial impact when encountering a secondary abiotic or biotic stress through the convergence of synergistic signalling pathways, referred to as cross-stress tolerance. 'Rewired plants' with stress memory provide a new means to stimulate adaptable stress responses, safeguard crop reproduction, and engineer climate-smart crops for the future.
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Affiliation(s)
- Haipei Liu
- School of Agriculture, Food & Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA 5064, Australia
| | - Amanda J Able
- School of Agriculture, Food & Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA 5064, Australia
| | - Jason A Able
- School of Agriculture, Food & Wine, Waite Research Institute, The University of Adelaide, Urrbrae, SA 5064, Australia.
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50
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Underwood CJ, Mercier R. Engineering Apomixis: Clonal Seeds Approaching the Fields. ANNUAL REVIEW OF PLANT BIOLOGY 2022; 73:201-225. [PMID: 35138881 DOI: 10.1146/annurev-arplant-102720-013958] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Apomixis is a form of reproduction leading to clonal seeds and offspring that are genetically identical to the maternal plant. While apomixis naturally occurs in hundreds of plant species distributed across diverse plant families, it is absent in major crop species. Apomixis has a revolutionary potential in plant breeding, as it could allow the instant fixation and propagation though seeds of any plant genotype, most notably F1 hybrids. Mastering and implementing apomixis would reduce the cost of hybrid seed production, facilitate new types of hybrid breeding, and make it possible to harness hybrid vigor in crops that are not presently cultivated as hybrids. Synthetic apomixis can be engineered by combining modifications of meiosis and fertilization. Here, we review the current knowledge and recent major achievements toward the development of efficient apomictic systems usable in agriculture.
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Affiliation(s)
- Charles J Underwood
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany; ,
| | - Raphael Mercier
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany; ,
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