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Tang J, Luo X, Zhu Y, Cai N, Chen L, Chen S, Xu Y. In vitro regeneration of triploid from mature endosperm culture of Passiflora edulis "Mantianxing". Biosci Biotechnol Biochem 2024; 88:412-419. [PMID: 38412471 DOI: 10.1093/bbb/zbae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024]
Abstract
The regeneration of shoots from endosperm tissue is a highly effective method to obtain triploid plants. In this study, we elucidated the establishment of an in vitro regeneration system from endosperm culture for the production of Passiflora edulis "Mantianxing." The highest callus induction rate (83.33%) was obtained on the media supplemented with 1.0 mg/L TDZ. Meanwhile, the MS medium containing 1.0 mg/L 6-BA and 0.4 mg/L IBA gave the optimum 75% shoot bud induction. Chromosome analysis revealed that the chromosomal count of P. edulis "Mantianxing" regenerated from endosperm tissues was 27 (2n = 3x = 27), which indicated that shoots regenerated from endosperm tissues were triploids. Triploid P. edulis had more drought resistance than diploid plants. Our study provided a method for breeding of passion fruit by means of a stable and reproducible regeneration system from endosperm culture, leading to the generation of triploid plants.
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Affiliation(s)
- Junrong Tang
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
| | - Xi Luo
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
| | - Yajing Zhu
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
| | - Nianhui Cai
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
| | - Lin Chen
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
| | - Shi Chen
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
| | - Yulan Xu
- Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, China
- College of Forestry, Southwest Forestry University, Kunming, China
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Zhang Y, Shen Y, Han M, Su Y, Feng X, Gao T, Zhou X, Wu Q, Sun G, Wang Y. Potential Response Patterns of Endogenous Hormones in Cliff Species Opisthopappus taihangensis and Opisthopappus longilobus under Salt Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:557. [PMID: 38498538 PMCID: PMC10892304 DOI: 10.3390/plants13040557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 03/20/2024]
Abstract
When plants are exposed to salt stress, endogenous hormones are essential for their responses through biosynthesis and signal transduction pathways. However, the roles of endogenous hormones in two cliff species (Opisthopappus taihangensis and Opisthopappus longilobus (Opisthopappus genus)) in the Taihang Mountains under salt stress have not been investigated to date. Following different time treatments under 500 mM salt concentrations, 239 differentially expressed gene (DEG)-related endogenous hormones were identified that exhibited four change trends, which in Profile 47 were upregulated in both species. The C-DEG genes of AUX, GA, JA, BR, ETH, and ABA endogenous hormones were significantly enriched in Opisthopappus taihangensis (O. taihangensis) and Opisthopappus longilobus (O. longilobus). During the responsive process, mainly AUX, GA, and JA biosynthesis and signal transduction were triggered in the two species. Subsequently, crosstalk further influenced BR, EHT, ABA, and MAPK signal transduction pathways to improve the salt resistance of the two species. Within the protein-protein interactions (PPI), seven proteins exhibited the highest interactions, which primarily involved two downregulated genes (SAUR and GA3ox) and eight upregulated genes (ACX, MFP2, JAZ, BRI1, BAK1, ETR, EIN2, and SNRK2) of the above pathways. The more upregulated expression of ZEP (in the ABA biosynthesis pathway), DELLA (in the GA signaling pathway), ABF (in the ABA signaling pathway), and ERF1 (in the ETH signaling pathway) in O. taihangensis revealed that it had a relatively higher salt resistance than O. longilobus. This revealed that the responsive patterns to salt stress between the two species had both similarities and differences. The results of this investigation shed light on the potential adaptive mechanisms of O. taihangensis and O. longilobus under cliff environments, while laying a foundation for the study of other cliff species in the Taihang Mountains.
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Affiliation(s)
- Yimeng Zhang
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Yuexin Shen
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Mian Han
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Yu Su
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Xiaolong Feng
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Ting Gao
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Xiaojuan Zhou
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Qi Wu
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
| | - Genlou Sun
- Department of Botany, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
| | - Yiling Wang
- School of Life Sciences, Shanxi Normal University, Taiyuan 030031, China; (Y.Z.); (Y.S.)
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Lawrence BT, Calle A, Saski CA, Melgar JC. Differential Gene Expression Patterns in Peach Roots under Non-Uniform Soil Conditions in Response to Organic Matter. Genes (Basel) 2024; 15:70. [PMID: 38254960 PMCID: PMC10815151 DOI: 10.3390/genes15010070] [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: 10/26/2023] [Revised: 12/01/2023] [Accepted: 01/01/2024] [Indexed: 01/24/2024] Open
Abstract
Organic matter (OM) amendments are often encouraged in sustainable agriculture programs but can create heterogeneous soil environments when applied to perennial crops such as peaches (Prunus persica (L.) Batsch). To better understand the responses of peach roots to non-uniform soil conditions, transcriptomic analysis was performed in a split-root study using uniform soil (the same soil type for all roots) or non-uniform soil (different soil types for each half of the root system) from either (1) autoclaved sand (S), (2) autoclaved sand with autoclaved compost (A), or (3) autoclaved sand with compost which included inherent biological soil life (B). Each uniform soil type (S, A, and B) was grouped and compared by uniform and non-uniform soil comparisons for a total of nine treatments. Comparisons revealed peach roots had differentially expressed genes (DEGs) and gene ontology terms between soil groups, with the S and B groups having a range of 106-411 DEGs and the A group having a range of 19-94 DEGs. Additionally, six modules were identified and correlated (p > 0.69) for six of the nine treatment combinations. This study broadly highlights the complexity of how OM and biological life in the rhizosphere interact with immediate and distant roots and sheds light on how non-homogenous soil conditions can influence peach root gene expression.
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Affiliation(s)
- Brian T. Lawrence
- Department of Plant and Environmental Sciences, Clemson University, 105 Collings Street, Clemson, SC 29634, USA
- Horticulture Section, School of Integrative Plant Science, Cornell University, Geneva, NY 14456, USA
| | - Alejandro Calle
- Department of Plant and Environmental Sciences, Clemson University, 105 Collings Street, Clemson, SC 29634, USA
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Fruitcentre, PCiTAL, Gardeny Park, Fruitcentre Building, 25003 Lleida, Spain
| | - Christopher A. Saski
- Department of Plant and Environmental Sciences, Clemson University, 105 Collings Street, Clemson, SC 29634, USA
| | - Juan Carlos Melgar
- Department of Plant and Environmental Sciences, Clemson University, 105 Collings Street, Clemson, SC 29634, USA
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Tian C, Quan H, Jiang R, Zheng Q, Huang S, Tan G, Yan C, Zhou J, Liao H. Differential roles of Cassia tora 1-deoxy-D-xylulose-5-phosphate synthase and 1-deoxy-D-xylulose-5-phosphate reductoisomerase in trade-off between plant growth and drought tolerance. FRONTIERS IN PLANT SCIENCE 2023; 14:1270396. [PMID: 37929171 PMCID: PMC10623318 DOI: 10.3389/fpls.2023.1270396] [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: 07/31/2023] [Accepted: 10/06/2023] [Indexed: 11/07/2023]
Abstract
Due to global climate change, drought is emerging as a major threat to plant growth and agricultural productivity. Abscisic acid (ABA) has been implicated in plant drought tolerance, however, its retarding effects on plant growth cannot be ignored. The reactions catalyzed by 1-deoxy-D-xylulose-5-phosphate synthase (DXS) and 1-deoxy-D-xylulose-5-phosphate reductoisomerase (DXR) proteins are critical steps within the isoprenoid biosynthesis in plants. Here, five DXS (CtDXS1-5) and two DXR (CtDXR1-2) genes were identified from Cassia tora genome. Based on multiple assays including the phylogeny, cis-acting element, expression pattern, and subcellular localization, CtDXS1 and CtDXR1 genes might be potential candidates controlling the isoprenoid biosynthesis. Intriguingly, CtDXS1 transgenic plants resulted in drought tolerance but retardant growth, while CtDXR1 transgenic plants exhibited both enhanced drought tolerance and increased growth. By comparison of β-carotene, chlorophyll, abscisic acid (ABA) and gibberellin 3 (GA3) contents in wild-type and transgenic plants, the absolute contents and (or) altered GA3/ABA levels were suggested to be responsible for the balance between drought tolerance and plant growth. The transcriptome of CtDXR1 transgenic plants suggested that the transcript levels of key genes, such as DXS, 9-cis-epoxycarotenoid dioxygenases (NCED), ent-kaurene synthase (KS) and etc, involved with chlorophyll, β-carotene, ABA and GA3 biosynthesis were induced and their contents increased accordingly. Collectively, the trade-off effect induced by CtDXR1 was associated with redesigning architecture in phytohormone homeostasis and thus was highlighted for future breeding purposes.
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Affiliation(s)
| | | | | | | | | | | | | | - Jiayu Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
| | - Hai Liao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, China
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Wang R, Zhang Z, Wang H, Chen Y, Zhang M. Soil Water Deficit Reduced Root Hydraulic Conductivity of Common Reed ( Phragmites australis). PLANTS (BASEL, SWITZERLAND) 2023; 12:3543. [PMID: 37896007 PMCID: PMC10610267 DOI: 10.3390/plants12203543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/02/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023]
Abstract
Alterations in root hydraulics in response to varying moisture conditions remain a subject of debate. In our investigation, we subjected common reeds (Phragmites australis) to a 45-day treatment with four distinct soil moisture levels. The findings unveiled that, in response to drought stress, the total root length, surface area, volume, and average diameter exhibited varying degrees of reduction. Anatomically, drought caused a reduction in root diameter (RD), cortex thickness (CT), vessel diameter (VD), and root cross-sectional area (RCA). A decrease in soil moisture significantly reduced both whole- and single-root hydraulic conductivity (Lpwr, Lpsr). The total length, surface area, volume, and average diameter of the reed root system were significantly correlated with Lpwr, while RD, CT, and RCA were significantly correlated with Lpsr. A decrease in soil moisture content significantly influenced root morphological and anatomical characteristics, which, in turn, altered Lpr, and the transcriptome results suggest that this may be associated with the variation in the expression of abscisic acid (ABA) and aquaporins (AQPs) genes. Our initial findings address a gap in our understanding of reed hydraulics, offering fresh theoretical insights into how herbaceous plants respond to external stressors.
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Affiliation(s)
- Ruiqing Wang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; (R.W.); (H.W.)
- The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing 100083, China
- Wetland Research Centre, Beijing Forestry University, Beijing 100083, China
| | - Zhenming Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; (R.W.); (H.W.)
- The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing 100083, China
- Wetland Research Centre, Beijing Forestry University, Beijing 100083, China
| | - Haoyue Wang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; (R.W.); (H.W.)
- The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing 100083, China
- Wetland Research Centre, Beijing Forestry University, Beijing 100083, China
| | - Yinglong Chen
- The UWA Institute of Agriculture, School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia;
| | - Mingxiang Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China; (R.W.); (H.W.)
- The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing 100083, China
- State Key Laboratory of Efficient Production of Forest Resources, Beijing 100083, China
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Lim H, Kobayashi MJ, Marsoem SN, Irawati D, Kosugi A, Kondo T, Tani N. Transcriptomic responses of oil palm ( Elaeis guineensis) stem to waterlogging at plantation in relation to precipitation seasonality. FRONTIERS IN PLANT SCIENCE 2023; 14:1213496. [PMID: 37636106 PMCID: PMC10448820 DOI: 10.3389/fpls.2023.1213496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023]
Abstract
Global warming-induced climate change causes significant agricultural problems by increasing the incidence of drought and flooding events. Waterlogging is an inevitable consequence of these changes but its effects on oil palms have received little attention and are poorly understood. Recent waterlogging studies have focused on oil palm seedlings, with particular emphasis on phenology. However, the transcriptomic waterlogging response of mature oil palms remains elusive in real environments. We therefore investigated transcriptomic changes over time in adult oil palms at plantations over a two-year period with pronounced seasonal variation in precipitation. A significant transcriptional waterlogging response was observed in the oil palm stem core but not in leaf samples when gene expression was correlated with cumulative precipitation over two-day periods. Pathways and processes upregulated or enriched in the stem core response included hypoxia, ethylene signaling, and carbon metabolism. Post-waterlogging recovery in oil palms was found to be associated with responses to heat stress and carotenoid biosynthesis. Nineteen transcription factors (TFs) potentially involved in the waterlogging response of mature oil palms were also identified. These data provide new insights into the transcriptomic responses of planted oil palms to waterlogging and offer valuable guidance on the sensitivity of oil palm plantations to future climate changes.
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Affiliation(s)
- Hui Lim
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Masaki J. Kobayashi
- Forestry Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, Japan
| | | | - Denny Irawati
- Faculty of Forestry, Universitas Gadjah Mada (UGM), Yogyakarta, Indonesia
| | - Akihiko Kosugi
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Toshiaki Kondo
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, Japan
| | - Naoki Tani
- Forestry Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Valarmathi R, Mahadeva Swamy HK, Appunu C, Suresha GS, Mohanraj K, Hemaprabha G, Mahadevaiah C, Ulaganathan V. Comparative transcriptome profiling to unravel the key molecular signalling pathways and drought adaptive plasticity in shoot borne root system of sugarcane. Sci Rep 2023; 13:12853. [PMID: 37553413 PMCID: PMC10409851 DOI: 10.1038/s41598-023-39970-1] [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: 04/19/2023] [Accepted: 08/02/2023] [Indexed: 08/10/2023] Open
Abstract
Sugarcane root system comprises of superficial sett roots as well as deeply-penetrating shoot borne roots (SBR) with latter being the permanent root system. In sugarcane, the healthy SBR contributes to a better crop yield and it also helps to produce multiple ratoon crops after the harvest. There is a dearth of in-depth knowledge on SBR system architecture and its functional role in modern day commercial hybrids. A comprehensive phenotypic, anatomical and whole transcriptome profiling, conducted between the commercial sugarcane hybrids and a wild germplasm Erianthus, found a developmental delay in both initiation and establishment of the SBR in commercial hybrid compared to Erianthus. The SBR system in Erianthus proved to be an extensive drought-adaptive root system architecture that significantly contributes to drought tolerance. On the other hand, SBRs in the commercial hybrids showed an irreversible collapse and damage of the root cells under drought stress. The outcomes from the comparative analysis of the transcriptome data showed a significant upregulation of the genes that regulate important stress signalling pathways viz., sugar, calcium, hormone signalling and phenylpropanoid biosynthesis in the SBRs of Erianthus. It was found that through these key signalling pathways, Erianthus SBRs triggered the downstream signalling cascade to impart physiological responses like osmoprotection, modification of the cell walls, detoxification of reactive oxygen species, expression of drought responsive transcription factors, maintenance of cell stability and lateral root development. The current study forms a basis for further exploration of the Shoot Borne Root system as a valuable breeding target to develop drought tolerant sugarcane genotypes.
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Affiliation(s)
- R Valarmathi
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India.
| | - H K Mahadeva Swamy
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
| | - C Appunu
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
| | - G S Suresha
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
| | - K Mohanraj
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
| | - G Hemaprabha
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
| | - C Mahadevaiah
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
| | - V Ulaganathan
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, India
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Lu Y, Fricke W. Salt Stress-Regulation of Root Water Uptake in a Whole-Plant and Diurnal Context. Int J Mol Sci 2023; 24:ijms24098070. [PMID: 37175779 PMCID: PMC10179082 DOI: 10.3390/ijms24098070] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
This review focuses on the regulation of root water uptake in plants which are exposed to salt stress. Root water uptake is not considered in isolation but is viewed in the context of other potential tolerance mechanisms of plants-tolerance mechanisms which relate to water relations and gas exchange. Plants spend between one third and half of their lives in the dark, and salt stress does not stop with sunset, nor does it start with sunrise. Surprisingly, how plants deal with salt stress during the dark has received hardly any attention, yet any growth response to salt stress over days, weeks, months and years is the integrative result of how plants perform during numerous, consecutive day/night cycles. As we will show, dealing with salt stress during the night is a prerequisite to coping with salt stress during the day. We hope to highlight with this review not so much what we know, but what we do not know; and this relates often to some rather basic questions.
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Affiliation(s)
- Yingying Lu
- School of Biology and Environmental Science, University College Dublin (UCD), Belfield, D04 N2E5 Dublin, Ireland
| | - Wieland Fricke
- School of Biology and Environmental Science, University College Dublin (UCD), Belfield, D04 N2E5 Dublin, Ireland
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Calone R, Mircea DM, González-Orenga S, Boscaiu M, Zuzunaga-Rosas J, Barbanti L, Vicente O. Effect of Recurrent Salt and Drought Stress Treatments on the Endangered Halophyte Limonium angustebracteatum Erben. PLANTS (BASEL, SWITZERLAND) 2023; 12:191. [PMID: 36616320 PMCID: PMC9823942 DOI: 10.3390/plants12010191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
Limonium angustebracteatum is an endemic halophyte from the Spanish Mediterranean coastal salt marshes. To investigate this species' ability to cope with recurrent drought and salt stress, one-year-old plants were subjected to two salt stress treatments (watering with 0.5 and 1 M NaCl solutions), one water stress treatment (complete irrigation withholding), or watered with non-saline water for the control, across three phases: first stress (30 days), recovery from both stresses (15 days), and second stress (15 days). Growth and biochemical parameters were determined after each period. The plants showed high salt tolerance but were sensitive to water deficit, as shown by the decrease in leaf fresh weight and water content, root water content, and photosynthetic pigments levels in response to the first water stress; then, they were restored to the respective control values upon recovery. Salt tolerance was partly based on the accumulation of Na+, Cl- and Ca2+ in the roots and predominantly in the leaves; ion levels also decreased to control values during recovery. Organic osmolytes (proline and total soluble sugars), oxidative stress markers (malondialdehyde and H2O2), and antioxidant compounds (total phenolic compounds and flavonoids) increased by various degrees under the first salt and water stress treatments, and declined after recovery. The analysed variables increased again, but generally to a lesser extent, during the second stress phase, suggesting the occurrence of stress acclimation acquired by the activation of defence mechanisms during the first stress period.
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Affiliation(s)
- Roberta Calone
- CREA—Council for Agricultural Research and Economics, Research Centre for Agriculture and Environment, I-40128 Bologna, I-00184 Rome, Italy
- Institute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
| | - Diana-Maria Mircea
- Institute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5 Manastur St., 400372 Cluj-Napoca, Romania
| | - Sara González-Orenga
- Institute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
- Department of Plant Biology and Soil Science, Universidad de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Monica Boscaiu
- Mediterranean Agroforestry Institute (IAM), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
| | - Javier Zuzunaga-Rosas
- Institute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
| | - Lorenzo Barbanti
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
| | - Oscar Vicente
- Institute for Conservation and Improvement of Valencian Agrodiversity (COMAV), Universitat Politècnica de València, Camino de Vera 14, 46022 Valencia, Spain
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Liu H, Chen W, Chai Y, Liu W, Chen H, Sun L, Tang X, Luo C, Chen D, Cheng X, Wang F, Yuan X, Huang C. Terpenoids and their gene regulatory networks in Opisthopappus taihangensis 'Taihang Mingzhu' as detected by transcriptome and metabolome analyses. FRONTIERS IN PLANT SCIENCE 2022; 13:1014114. [PMID: 36247591 PMCID: PMC9557748 DOI: 10.3389/fpls.2022.1014114] [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: 08/08/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
'Taihang Mingzhu' is the hybrid offspring of Opisthopappus taihangensis, and it has an excellent characteristic of whole-plant fragrance. At present, the genes and metabolites involved in the synthesis of its aromatic compounds are unknown because of the paucity of molecular biology studies on flowering in the Opisthopappus Shih genus. To elucidate the biosynthetic pathways of terpenoids, the main aromatic compounds in 'Taihang Mingzhu', we conducted transcriptome and metabolite analyses on its leaves and bud, inflorescences at the color-development, flowering, and full-bloom stages. A total of 82,685 unigenes were obtained, of which 43,901 were annotated on the basis of information at the protein databases Nr, SwissProt, KEGG, and COG/KOG (e-value<0.00001). Using gas headspace solid-phase microextraction chromatography - mass spectrometry (HS-SPME-GC/MS), 1350 metabolites were identified, the most abundant of which were terpenoids (302 metabolites). Analyses of the gene regulatory network of terpenoids in 'Taihang Mingzhu' identified 52 genes potentially involved in the regulation of terpenoid synthesis. The correlations between genes related to terpenoid metabolism/regulation and metabolite abundance were analyzed. We also extracted the essential oil from the leaves of 'Taihang Mingzhu' by hydrodistillation, and obtained 270 aromatic compounds. Again, the most abundant class was terpenoids. These results provide guidance for the extraction of essential oil from 'Taihang Mingzhu' leaves and flowers. In addition, our analyses provide valuable genetic resources to identify genetic targets to manipulate the aromatic profiles of this plant and other members the Opisthopappus Shih genus by molecular breeding.
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Affiliation(s)
- Hua Liu
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Wendan Chen
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
| | - Yuhong Chai
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Wenchao Liu
- Beijing Liu Wenchao Institute of Summer Chrysanthemums Breeding Science and Technology, Beijing, China
| | - Haixia Chen
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Lei Sun
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Xiaowei Tang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Chang Luo
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Dongliang Chen
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Xi Cheng
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Fengjun Wang
- Department of Food Science and Engineering, College of Biological Sciences and Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing, China
| | - Xiaohuan Yuan
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
| | - Conglin Huang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center of Functional Floriculture, Beijing, China
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11
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Rajarajan K, Sakshi S, Taria S, Prathima PT, Radhakrishna A, Anuragi H, Ashajyothi M, Bharati A, Handa AK, Arunachalam A. Whole plant response of Pongamia pinnata to drought stress tolerance revealed by morpho-physiological, biochemical and transcriptome analysis. Mol Biol Rep 2022; 49:9453-9463. [PMID: 36057878 DOI: 10.1007/s11033-022-07808-0] [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: 03/28/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Pongamia is considered an important biofuel species worldwide. Drought stress in the early growth stages of Pongamia influences negatively on the germination and seedling development. Due to lack of cultivar stability under drought stress conditions, establishment of successful plantation in drought hit areas becomes a major problem. To address this issue, drought stress response of four Pongamia genotypes was studied at morphological, physio-chemical and transcriptome levels. METHODS AND RESULTS Drought stress was levied by limiting water for 15 days on three months old seedlings of four genotypes. A significant effect of water stress was observed on the traits considered. The genotype NRCP25 exhibited superior morpho-physiological, biochemical drought responses. Also, the genotype had higher root length, photosynthetic pigments, higher antioxidant enzymes and solute accumulation compared to other genotypes. In addition, transcript profiling of selected drought responsive candidate genes such as trehalose phosphate synthase 1 (TPS1), abscisic acid responsive elements-binding protein 2 (ABF2-2), heat shock protein 17 (HSP 17 kDa), tonoplast intrinsic protein 1 (TIP 1-2), zinc finger homeodomain protein 2 (ZFP 2), and xyloglucan endotransglucolase 13 (XET 13) showed only up-regulation in NRCP25. Further, the transcriptome responses are in line with key physio-chemical responses exhibited by NRCP25 for drought tolerance. CONCLUSIONS As of now, there are no systematic studies on Pongamia drought stress tolerance; therefore this study offers a comprehensive understanding of whole plant drought stress responsiveness of Pongamia. Moreover, the results support important putative trait indices with potential candidate genes for drought tolerance improvement of Pongamia.
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Affiliation(s)
- K Rajarajan
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India.
| | - S Sakshi
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
| | - S Taria
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
| | - P T Prathima
- Sugarcane Breeding Institute, Coimbatore, Coimbatore, Tamilnadu, India
| | - A Radhakrishna
- Indian Grassland and Fodder Research Institute, Jhansi, Uttar Pradesh, India
| | - H Anuragi
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
| | - M Ashajyothi
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
| | - A Bharati
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
| | - A K Handa
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
| | - A Arunachalam
- ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh, India
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12
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Zhang Z, Jatana BS, Campbell BJ, Gill J, Suseela V, Tharayil N. Cross-inoculation of rhizobiome from a congeneric ruderal plant imparts drought tolerance in maize (Zea mays) through changes in root morphology and proteome. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:54-71. [PMID: 35426964 PMCID: PMC9542220 DOI: 10.1111/tpj.15775] [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: 06/12/2021] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Rhizobiome confer stress tolerance to ruderal plants, yet their ability to alleviate stress in crops is widely debated, and the associated mechanisms are poorly understood. We monitored the drought tolerance of maize (Zea mays) as influenced by the cross-inoculation of rhizobiota from a congeneric ruderal grass Andropogon virginicus (andropogon-inoculum), and rhizobiota from organic farm maintained under mesic condition (organic-inoculum). Across drought treatments (40% field capacity), maize that received andropogon-inoculum produced two-fold greater biomass. This drought tolerance translated to a similar leaf metabolomic composition as that of the well-watered control (80% field capacity) and reduced oxidative damage, despite a lower activity of antioxidant enzymes. At a morphological-level, drought tolerance was associated with an increase in specific root length and surface area facilitated by the homeostasis of phytohormones promoting root branching. At a proteome-level, the drought tolerance was associated with upregulation of proteins related to glutathione metabolism and endoplasmic reticulum-associated degradation process. Fungal taxa belonging to Ascomycota, Mortierellomycota, Archaeorhizomycetes, Dothideomycetes, and Agaricomycetes in andropogon-inoculum were identified as potential indicators of drought tolerance. Our study provides a mechanistic understanding of the rhizobiome-facilitated drought tolerance and demonstrates a better path to utilize plant-rhizobiome associations to enhance drought tolerance in crops.
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Affiliation(s)
- Ziliang Zhang
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
| | | | | | - Jasmine Gill
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
| | - Vidya Suseela
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
| | - Nishanth Tharayil
- Department of Plant & Environmental SciencesClemson UniversityClemsonSCUSA
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13
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Kim G, Ryu H, Sung J. Hormonal Crosstalk and Root Suberization for Drought Stress Tolerance in Plants. Biomolecules 2022; 12:biom12060811. [PMID: 35740936 PMCID: PMC9220869 DOI: 10.3390/biom12060811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/05/2022] [Accepted: 06/06/2022] [Indexed: 12/10/2022] Open
Abstract
Higher plants in terrestrial environments face to numerous unpredictable environmental challenges, which lead to a significant impact on plant growth and development. In particular, the climate change caused by global warming is causing drought stress and rapid desertification in agricultural fields. Many scientific advances have been achieved to solve these problems for agricultural and plant ecosystems. In this review, we handled recent advances in our understanding of the physiological changes and strategies for plants undergoing drought stress. The activation of ABA synthesis and signaling pathways by drought stress regulates root development via the formation of complicated signaling networks with auxin, cytokinin, and ethylene signaling. An abundance of intrinsic soluble sugar, especially trehalose-6-phosphate, promotes the SnRK-mediated stress-resistance mechanism. Suberin deposition in the root endodermis is a physical barrier that regulates the influx/efflux of water and nutrients through complex hormonal and metabolic networks, and suberization is essential for drought-stressed plants to survive. It is highly anticipated that this work will contribute to the reproduction and productivity improvements of drought-resistant crops in the future.
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Affiliation(s)
- Gaeun Kim
- Department of Crop Science, Chungbuk National University, Cheong-ju 28644, Korea;
| | - Hojin Ryu
- Department of Biology, Chungbuk National University, Cheong-ju 28644, Korea
- Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheong-ju 28644, Korea
- Correspondence: (H.R.); (J.S.); Tel.: +82-043-261-2293 (H.R.); +82-043-261-2512 (J.S.)
| | - Jwakyung Sung
- Department of Crop Science, Chungbuk National University, Cheong-ju 28644, Korea;
- Correspondence: (H.R.); (J.S.); Tel.: +82-043-261-2293 (H.R.); +82-043-261-2512 (J.S.)
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14
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Demmig-Adams B, López-Pozo M, Polutchko SK, Fourounjian P, Stewart JJ, Zenir MC, Adams WW. Growth and Nutritional Quality of Lemnaceae Viewed Comparatively in an Ecological and Evolutionary Context. PLANTS (BASEL, SWITZERLAND) 2022; 11:145. [PMID: 35050033 PMCID: PMC8779320 DOI: 10.3390/plants11020145] [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: 11/14/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 06/14/2023]
Abstract
This review focuses on recently characterized traits of the aquatic floating plant Lemna with an emphasis on its capacity to combine rapid growth with the accumulation of high levels of the essential human micronutrient zeaxanthin due to an unusual pigment composition not seen in other fast-growing plants. In addition, Lemna's response to elevated CO2 was evaluated in the context of the source-sink balance between plant sugar production and consumption. These and other traits of Lemnaceae are compared with those of other floating aquatic plants as well as terrestrial plants adapted to different environments. It was concluded that the unique features of aquatic plants reflect adaptations to the freshwater environment, including rapid growth, high productivity, and exceptionally strong accumulation of high-quality vegetative storage protein and human antioxidant micronutrients. It was further concluded that the insensitivity of growth rate to environmental conditions and plant source-sink imbalance may allow duckweeds to take advantage of elevated atmospheric CO2 levels via particularly strong stimulation of biomass production and only minor declines in the growth of new tissue. It is proposed that declines in nutritional quality under elevated CO2 (due to regulatory adjustments in photosynthetic metabolism) may be mitigated by plant-microbe interaction, for which duckweeds have a high propensity.
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Affiliation(s)
- Barbara Demmig-Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA; (S.K.P.); (P.F.); (J.J.S.); (M.C.Z.); (W.W.A.III)
| | - Marina López-Pozo
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), 48049 Bilbao, Spain;
| | - Stephanie K. Polutchko
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA; (S.K.P.); (P.F.); (J.J.S.); (M.C.Z.); (W.W.A.III)
| | - Paul Fourounjian
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA; (S.K.P.); (P.F.); (J.J.S.); (M.C.Z.); (W.W.A.III)
- International Lemna Association, Denville, NJ 07832, USA
| | - Jared J. Stewart
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA; (S.K.P.); (P.F.); (J.J.S.); (M.C.Z.); (W.W.A.III)
| | - Madeleine C. Zenir
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA; (S.K.P.); (P.F.); (J.J.S.); (M.C.Z.); (W.W.A.III)
| | - William W. Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA; (S.K.P.); (P.F.); (J.J.S.); (M.C.Z.); (W.W.A.III)
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15
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Guo J, Shan C, Zhang Y, Wang X, Tian H, Han G, Zhang Y, Wang B. Mechanisms of Salt Tolerance and Molecular Breeding of Salt-Tolerant Ornamental Plants. FRONTIERS IN PLANT SCIENCE 2022; 13:854116. [PMID: 35574092 PMCID: PMC9093713 DOI: 10.3389/fpls.2022.854116] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/30/2022] [Indexed: 05/10/2023]
Abstract
As the area of salinized soils increases, and freshwater becomes more scarcer worldwide, an urgent measure for agricultural production is to use salinized land and conserve freshwater resources. Ornamental flowering plants, such as carnations, roses, chrysanthemums, and gerberas, are found around the world and have high economic, ornamental, ecological, and edible value. It is therefore prudent to improve the salt tolerance of these important horticultural crops. Here, we summarize the salt-adaptive mechanisms, genes, and molecular breeding of ornamental flowering crops. We also review the genome editing technologies that provide us with the means to obtain novel varieties with high salinity tolerance and improved utility value, and discuss future directions of research into ornamental plants like salt exclusion mechanism. We considered that the salt exclusion mechanism in ornamental flowering plants, the acquisition of flowers with high quality and novel color under salinity condition through gene editing techniques should be focused on for the future research.
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Affiliation(s)
- Jianrong Guo
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
- *Correspondence: Jianrong Guo,
| | - Changdan Shan
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
| | - Yifan Zhang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
| | - Xinlei Wang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
| | - Huaying Tian
- College of Forestry Engineering, Shandong Agriculture and Engineering University, Ji’nan, China
| | - Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
| | - Yi Zhang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
| | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji’nan, China
- Baoshan Wang,
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16
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Karlova R, Boer D, Hayes S, Testerink C. Root plasticity under abiotic stress. PLANT PHYSIOLOGY 2021; 187:1057-1070. [PMID: 34734279 PMCID: PMC8566202 DOI: 10.1093/plphys/kiab392] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/25/2021] [Indexed: 05/08/2023]
Abstract
Abiotic stresses increasingly threaten existing ecological and agricultural systems across the globe. Plant roots perceive these stresses in the soil and adapt their architecture accordingly. This review provides insights into recent discoveries showing the importance of root system architecture (RSA) and plasticity for the survival and development of plants under heat, cold, drought, salt, and flooding stress. In addition, we review the molecular regulation and hormonal pathways involved in controlling RSA plasticity, main root growth, branching and lateral root growth, root hair development, and formation of adventitious roots. Several stresses affect root anatomy by causing aerenchyma formation, lignin and suberin deposition, and Casparian strip modulation. Roots can also actively grow toward favorable soil conditions and avoid environments detrimental to their development. Recent advances in understanding the cellular mechanisms behind these different root tropisms are discussed. Understanding root plasticity will be instrumental for the development of crops that are resilient in the face of abiotic stress.
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Affiliation(s)
- Rumyana Karlova
- Laboratory of Plant Physiology, Wageningen University, 6700 AA Wageningen, The Netherlands
| | - Damian Boer
- Laboratory of Plant Physiology, Wageningen University, 6700 AA Wageningen, The Netherlands
| | - Scott Hayes
- Laboratory of Plant Physiology, Wageningen University, 6700 AA Wageningen, The Netherlands
| | - Christa Testerink
- Laboratory of Plant Physiology, Wageningen University, 6700 AA Wageningen, The Netherlands
- Author for communication:
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17
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Yang Y, Ma K, Zhang T, Li L, Wang J, Cheng T, Zhang Q. Characteristics and Expression Analyses of Trehalose-6-Phosphate Synthase Family in Prunus mume Reveal Genes Involved in Trehalose Biosynthesis and Drought Response. Biomolecules 2020; 10:biom10101358. [PMID: 32977584 PMCID: PMC7598203 DOI: 10.3390/biom10101358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 11/16/2022] Open
Abstract
Trehalose and its key synthase (trehalose-6-phosphate synthase, TPS) can improve the drought tolerance of plants. However, little is known about the roles of trehalose and the TPS family in Prunus mume response to drought. In our study, we discovered that the trehalose content in leaf, root, and stem tissues significantly increased in P. mume in response to drought. Therefore, the characteristics and functions of the TPS family are worth investigating in P. mume. We identified nine TPS family members in P. mume, which were divided into two sub-families and characterized by gene structure, promoter elements, protein conserved domains, and protein motifs. We found that the Hydrolase_3 domain and several motifs were highly conserved in Group II instead of Group I. The distinctions between the two groups may result from selective constraints, which we estimated by the dN/dS (ω) ratio. The ω values of all the PmTPS family gene pairs were evaluated as less than 1, indicating that purity selection facilitated their divergence. A phylogenetic tree was constructed using 92 TPSs from 10 Rosaceae species, which were further divided into five clusters. Based on evolutionary analyses, the five clusters of TPS family proteins mainly underwent varied purity selection. The expression patterns of PmTPSs under drought suggested that the TPS family played an important role in the drought tolerance of P. mume. Combining the expression patterns of PmTPSs and the trehalose content changes in leaf, stem, and root tissues under normal conditions and drought stress, we found that the PmTPS2 and PmTPS6 mainly function in the trehalose biosynthesis in P. mume. Our findings not only provide valuable information about the functions of trehalose and TPSs in the drought response of P. mume, but they also contribute to the future drought breeding of P. mume.
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Affiliation(s)
- Yongjuan Yang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (Y.Y.); (T.Z.); (L.L.)
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Kaifeng Ma
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Tengxun Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (Y.Y.); (T.Z.); (L.L.)
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Lulu Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (Y.Y.); (T.Z.); (L.L.)
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Jia Wang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Tangren Cheng
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Qixiang Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (Y.Y.); (T.Z.); (L.L.)
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing 100083, China; (K.M.); (J.W.); (T.C.)
- National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing 100083, China
- Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing 100083, China
- Engineering Research Center of Landscape Environment of Ministry of Education, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing 100083, China
- School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
- Correspondence: ; Tel.: +86-010-6233-8005
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