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Escobar-Bravo R, Schimmel BCJ, Zhang Y, Wang L, Robert CAM, Glauser G, Ballaré CL, Erb M. Far-red light increases maize volatile emissions in response to volatile cues from neighbouring plants. PLANT, CELL & ENVIRONMENT 2024. [PMID: 38872585 DOI: 10.1111/pce.14995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 03/13/2024] [Accepted: 05/28/2024] [Indexed: 06/15/2024]
Abstract
Plants perceive the presence and defence status of their neighbours through light and volatile cues, but how plants integrate both stimuli is poorly understood. We investigated if and how low Red to Far red light (R:FR) ratios, indicative of shading or canopy closure, affect maize (Zea mays) responses to herbivore-induced plant volatiles (HIPVs), including the green leaf volatile (Z)-3-hexenyl acetate. We modulated light signalling and perception by using FR supplementation and a phyB1phyB2 mutant, and we determined volatile release as a response readout. To gain mechanistic insights, we examined expression of volatile biosynthesis genes, hormone accumulation, and photosynthesis. Exposure to a full blend of HIPVs or (Z)-3-hexenyl acetate induced maize volatile release. Short-term FR supplementation increased this response. In contrast, prolonged FR supplementation or constitutive phytochrome B inactivation in phyB1phyB2 plants showed the opposite response. Short-term FR supplementation enhanced photosynthesis and stomatal conductance and (Z)-3-hexenyl acetate-induced JA-Ile levels. We conclude that a FR-enriched light environment can prompt maize plants to respond more strongly to HIPVs emitted by neighbours, which might be explained by changes in photosynthetic processes and phytochrome B signalling. Our findings reveal interactive responses to light and volatile cues with potentially important consequences for plant-plant and plant-herbivore interactions.
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Affiliation(s)
| | | | - Yaqin Zhang
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Lei Wang
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | | | - Gaétan Glauser
- Neuchâtel Platform of Analytical Chemistry, University of Neuchâtel, Neuchâtel, Switzerland
| | - Carlos L Ballaré
- Facultad de Agronomía, Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad de Buenos Aires, Buenos Aires, Argentina
- 2IIBio, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Matthias Erb
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
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2
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Holden CA, McAinsh MR, Taylor JE, Beckett P, Albacete A, Martínez-Andújar C, Morais CLM, Martin FL. Attenuated total reflection Fourier-transform infrared spectroscopy for the prediction of hormone concentrations in plants. Analyst 2024; 149:3380-3395. [PMID: 38712606 DOI: 10.1039/d3an01817b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Plant hormones are important in the control of physiological and developmental processes including seed germination, senescence, flowering, stomatal aperture, and ultimately the overall growth and yield of plants. Many currently available methods to quantify such growth regulators quickly and accurately require extensive sample purification using complex analytic techniques. Herein we used ultra-performance liquid chromatography-high-resolution mass spectrometry (UHPLC-HRMS) to create and validate the prediction of hormone concentrations made using attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectral profiles of both freeze-dried ground leaf tissue and extracted xylem sap of Japanese knotweed (Reynoutria japonica) plants grown under different environmental conditions. In addition to these predictions made with partial least squares regression, further analysis of spectral data was performed using chemometric techniques, including principal component analysis, linear discriminant analysis, and support vector machines (SVM). Plants grown in different environments had sufficiently different biochemical profiles, including plant hormonal compounds, to allow successful differentiation by ATR-FTIR spectroscopy coupled with SVM. ATR-FTIR spectral biomarkers highlighted a range of biomolecules responsible for the differing spectral signatures between growth environments, such as triacylglycerol, proteins and amino acids, tannins, pectin, polysaccharides such as starch and cellulose, DNA and RNA. Using partial least squares regression, we show the potential for accurate prediction of plant hormone concentrations from ATR-FTIR spectral profiles, calibrated with hormonal data quantified by UHPLC-HRMS. The application of ATR-FTIR spectroscopy and chemometrics offers accurate prediction of hormone concentrations in plant samples, with advantages over existing approaches.
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Affiliation(s)
- Claire A Holden
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Martin R McAinsh
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Jane E Taylor
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | | | - Alfonso Albacete
- Institute for Agro-Environmental Research and Development of Murcia (IMIDA), Department of Plant Production and Agrotechnology, C/ Mayor s/n, La Alberca, E-30150 Murcia, Spain
- CEBAS-CSIC, Department of Plant Nutrition, Campus Universitario de Espinardo, E-30100 Murcia, Spain
| | | | - Camilo L M Morais
- Center for Education, Science and Technology of the Inhamuns Region, State University of Ceará, Tauá 63660-000, Brazil
- Graduate Program in Chemistry, Institute of Chemistry, Federal University of Rio Grande do Norte, Natal 59072-970, Brazil
| | - Francis L Martin
- Department of Cellular Pathology, Blackpool Teaching Hospitals NHS Foundation Trust, Whinney Heys Road, Blackpool FY3 8NR, UK.
- Biocel UK Ltd, Hull HU10 6TS, UK
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3
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Chen S, Marcelis LFM, Offringa R, Kohlen W, Heuvelink E. Far-red light-enhanced apical dominance stimulates flower and fruit abortion in sweet pepper. PLANT PHYSIOLOGY 2024; 195:924-939. [PMID: 38366641 PMCID: PMC11142340 DOI: 10.1093/plphys/kiae088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 02/18/2024]
Abstract
Far-red radiation affects many plant processes, including reproductive organ abortion. Our research aimed to determine the role of apical dominance in far-red light-induced flower and fruit abortion in sweet pepper (Capsicum annuum L.). We conducted several climate room experiments where plants were grown under white- or red-rich LED light, with or without additional far-red light. Additional far-red light enhanced apical dominance: it increased auxin levels in the apices of dominant shoots, and caused a greater difference in internode length and apical auxin levels between dominant and subordinate shoots. Additional far-red light stimulated fruit abortion in intact plants but not in decapitated plants, suggesting a crucial role of shoot apices in this effect. However, reducing basipetal auxin transport in the stems with N-1-naphthylphthalamic acid did not influence far-red light-stimulated fruit abortion, although auxin levels in the stem were largely reduced. Applying the synthetic auxin 1-naphthaleneacetic acid on decapitated apices did not influence fruit abortion. However, applying the auxin biosynthesis inhibitor yucasin to shoot apices reduced fruit abortion regardless of the light conditions, accompanied by slight shoot growth retardation. These findings suggest that the basipetal auxin stream does not mediate far-red light-stimulated fruit abortion. Far-red light-stimulated fruit abortion was associated with reduced sucrose accumulation and lower invertase activities in flowers. We suggest that under additional far-red light conditions, increased auxin levels in shoot apices promote fruit abortion probably through enhanced competition for assimilates between apices and flowers, which limits assimilate import into flowers.
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Affiliation(s)
- Sijia Chen
- Horticulture and Product Physiology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Leo F M Marcelis
- Horticulture and Product Physiology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Remko Offringa
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Wouter Kohlen
- Laboratory of Cell and Developmental Biology, Cluster Plant Developmental Biology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
| | - Ep Heuvelink
- Horticulture and Product Physiology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
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4
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Van Brenk JB, Courbier S, Kleijweg CL, Verdonk JC, Marcelis LFM. Paradise by the far-red light: Far-red and red:blue ratios independently affect yield, pigments, and carbohydrate production in lettuce, Lactuca sativa. FRONTIERS IN PLANT SCIENCE 2024; 15:1383100. [PMID: 38745919 PMCID: PMC11091871 DOI: 10.3389/fpls.2024.1383100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/15/2024] [Indexed: 05/16/2024]
Abstract
In controlled environment agriculture, customized light treatments using light-emitting diodes are crucial to improving crop yield and quality. Red (R; 600-700 nm) and blue light (B; 400-500 nm) are two major parts of photosynthetically active radiation (PAR), often preferred in crop production. Far-red radiation (FR; 700-800 nm), although not part of PAR, can also affect photosynthesis and can have profound effects on a range of morphological and physiological processes. However, interactions between different red and blue light ratios (R:B) and FR on promoting yield and nutritionally relevant compounds in crops remain unknown. Here, lettuce was grown at 200 µmol m-2 s-1 PAR under three different R:B ratios: R:B87.5:12.5 (12.5% blue), R:B75:25 (25% blue), and R:B60:40 (40% blue) without FR. Each treatment was also performed with supplementary FR (50 µmol m-2 s-1; R:B87.5:12.5+FR, R:B75:25+FR, and R:B60:40+FR). White light with and without FR (W and W+FR) were used as control treatments comprising of 72.5% red, 19% green, and 8.5% blue light. Increasing the R:B ratio from R:B87.5:12.5 to R:B60:40, there was a decrease in fresh weight (20%) and carbohydrate concentration (48% reduction in both sugars and starch), whereas pigment concentrations (anthocyanins, chlorophyll, and carotenoids), phenolic compounds, and various minerals all increased. These results contrasted the effects of FR supplementation in the growth spectra; when supplementing FR to different R:B backgrounds, we found a significant increase in plant fresh weight, dry weight, total soluble sugars, and starch. Additionally, FR decreased concentrations of anthocyanins, phenolic compounds, and various minerals. Although blue light and FR effects appear to directly contrast, blue and FR light did not have interactive effects together when considering plant growth, morphology, and nutritional content. Therefore, the individual benefits of increased blue light fraction and supplementary FR radiation can be combined and used cooperatively to produce crops of desired quality: adding FR increases growth and carbohydrate concentration while increasing the blue fraction increases nutritional value.
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Affiliation(s)
- Jordan B. Van Brenk
- Horticulture and Product Physiology, Plant Sciences Group, Wageningen University and Research, Wageningen, Netherlands
| | - Sarah Courbier
- Horticulture and Product Physiology, Plant Sciences Group, Wageningen University and Research, Wageningen, Netherlands
- Faculty of Biology II, University of Freiburg, Freiburg, Germany
- Centre for Integrative Biological Signalling Studies (CIBSS), University of Freiburg, Freiburg, Germany
| | - Celestin L. Kleijweg
- Horticulture and Product Physiology, Plant Sciences Group, Wageningen University and Research, Wageningen, Netherlands
| | - Julian C. Verdonk
- Horticulture and Product Physiology, Plant Sciences Group, Wageningen University and Research, Wageningen, Netherlands
| | - Leo F. M. Marcelis
- Horticulture and Product Physiology, Plant Sciences Group, Wageningen University and Research, Wageningen, Netherlands
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5
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Kong J, Zhao Y, Fan P, Wang Y, Xu X, Wang L, Li S, Duan W, Liang Z, Dai Z. Far-red light modulates grapevine growth by increasing leaf photosynthesis efficiency and triggering organ-specific transcriptome remodelling : Author. BMC PLANT BIOLOGY 2024; 24:189. [PMID: 38486149 PMCID: PMC10941557 DOI: 10.1186/s12870-024-04870-7] [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: 05/15/2023] [Accepted: 02/28/2024] [Indexed: 03/17/2024]
Abstract
BACKGROUND Growing evidence demonstrates that the synergistic interaction of far-red light with shorter wavelength lights could evidently improve the photosynthesis efficiency of multiple species. However, whether/how far-red light affects sink organs and consequently modulates the source‒sink relationships are largely unknown. RESULTS Here, equal intensities of white and far-red lights were added to natural light for grape plantlets to investigate the effects of far-red light supplementation on grapevine growth and carbon assimilate allocation, as well as to reveal the underlying mechanisms, through physiological and transcriptomic analysis. The results showed that additional far-red light increased stem length and carbohydrate contents in multiple organs and decreased leaf area, specific leaf weight and dry weight of leaves in comparison with their counterparts grown under white light. Compared to white light, the maximum net photosynthetic rate of the leaves was increased by 31.72% by far-red light supplementation, indicating that far-red light indeed elevated the photosynthesis efficiency of grapes. Transcriptome analysis revealed that leaves were most responsive to far-red light, followed by sink organs, including stems and roots. Genes related to light signaling and carbon metabolites were tightly correlated with variations in the aforementioned physiological traits. In particular, VvLHCB1 is involved in light harvesting and restoring the balance of photosystem I and photosystem II excitation, and VvCOP1 and VvPIF3, which regulate light signal transduction, were upregulated under far-red conditions. In addition, the transcript abundances of the sugar transporter-encoding genes VvSWEET1 and VvSWEET3 and the carbon metabolite-encoding genes VvG6PD, VvSUS7 and VvPGAM varied in line with the change in sugar content. CONCLUSIONS This study showed that far-red light synergistically functioning with white light has a beneficial effect on grape photosystem activity and is able to differentially affect the growth of sink organs, providing evidence for the possible addition of far-red light to the wavelength range of photosynthetically active radiation (PAR).
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Affiliation(s)
- Junhua Kong
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Yan Zhao
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Peige Fan
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yongjian Wang
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Xiaobo Xu
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Lijun Wang
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Shaohua Li
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Wei Duan
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Zhenchang Liang
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Zhanwu Dai
- State Key Laboratory of Plant Diversity and Specialty Crops, Beijing Key Laboratory of Grape Sciences and Enology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
- China National Botanical Garden, Beijing, 100093, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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6
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Yan W, Wang Z, Pei Y, Zhou B. Adaptive responses of eelgrass (Zostera marina L.) to ocean warming and acidification. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108257. [PMID: 38064900 DOI: 10.1016/j.plaphy.2023.108257] [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: 08/27/2023] [Revised: 11/12/2023] [Accepted: 11/30/2023] [Indexed: 02/15/2024]
Abstract
Ocean warming (OW) and ocean acidification (OA), driven by rapid global warming accelerating at unprecedented rates, are profoundly impacting the stability of seagrass ecosystems. Yet, our current understanding of the effects of OW and OA on seagrass remains constrained. Herein, we investigated the response of eelgrass (Zostera marina L.), a representative seagrass species, to OW and OA through comprehensive transcriptomic and metabolomic analyses. The results showed notable variations in plant performance under varying conditions: OW, OA, and OWA (a combination of both conditions). Specifically, under average oceanic temperature conditions for eelgrass growth over the past 20 years -from May to November-OA promoted the production of differentially expressed genes and metabolites associated with alanine, aspartate, and glutamate metabolism, as well as starch and sucrose metabolism. Under warming condition, eelgrass was resistant to OA by accelerating galactose metabolism, along with glycine, serine, and threonine metabolism, as well as the tricarboxylic acid (TCA) cycle. Under the combined OW and OA condition, eelgrass stimulated fructose and mannose metabolism, glycolysis, and carbon fixation, in addition to galactose metabolism and the TCA cycle to face the interplay. Our findings suggest that eelgrass exhibits adaptive capacity by inducing different metabolites and associated genes, primarily connected with carbon and nitrogen metabolism, in response to varying degrees of OW and OA. The data generated here support the exploration of mechanisms underlying seagrass responses to environmental fluctuations, which hold critical significance for the future conservation and management of these ecosystems.
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Affiliation(s)
- Wenjie Yan
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, 266003, China.
| | - Zhaohua Wang
- First Institute of Oceanography, MNR, Qingdao, 266061, China
| | - Yanzhao Pei
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, China
| | - Bin Zhou
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, China.
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7
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Kupčinskienė A, Brazaitytė A, Rasiukevičiūtė N, Valiuškaitė A, Morkeliūnė A, Vaštakaitė-Kairienė V. Vegetation Indices for Early Grey Mould Detection in Lettuce Grown under Different Lighting Conditions. PLANTS (BASEL, SWITZERLAND) 2023; 12:4042. [PMID: 38068676 PMCID: PMC10871106 DOI: 10.3390/plants12234042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 02/18/2024]
Abstract
Early detection of pathogenic fungi in controlled environment areas can prevent major food production losses. Grey mould caused by Botrytis cinerea is often detected as an infection on lettuce. This paper explores the use of vegetation indices for early detection and monitoring of grey mould on lettuce under different lighting conditions in controlled environment chambers. The aim was focused on the potential of using vegetation indices for the early detection of grey mould and on evaluating their changes during disease development in lettuce grown under different lighting conditions. The experiment took place in controlled environment chambers, where day/night temperatures were 21 ± 2/17 ± 2 °C, a 16 h photoperiod was established, and relative humidity was 70 ± 10% under different lighting conditions: high-pressure sodium (HPS) and light-emitting diode (LED) lamps. Lettuces were inoculated by 7-day-old fungus Botrytis cinerea isolate at the BBCH 21. As a control, non-inoculated lettuces were grown under HPS and LEDs (non-inoculated). Then, the following were evaluated: Anthocyanin Reflectance Index 2 (ARI2); Carotenoid Reflectance Index 2 (CRI2); Structure Intensive Pigment Index (SIPI); Flavanol Reflectance Index (FRI); Greenness (G); Greenness 2 (G2); Redness (R); Blue (B); Blue Green Index 2 (BGI2); Browning Index 2 (BRI2); Lichtenthaler Index 1 (LIC1); Pigment Specific Simple Ratio (PSSRa and PSSRb); Gitelson and Merzlyak (GM1 and GM2); Zarco Tejada-Miller Index (ZMI); Normalized Difference Vegetation Index (NDVI); Simple Ratio (SR); Red-Eye Vegetation Stress Index (RVSI); Photochemical Reflectance Index (PRI); Photochemical Reflectance Index 515 (PRI515); Water Band Index (WBI); specific disease index for individual study (fD); Healthy Index (HI); Plant Senescence Reflectance (PSRI); Vogelmann Red Edge Index (VREI1); Red Edge Normalized Difference Vegetation Index (RENDVI); and Modified Red Edge Simple Ratio (MRESRI). Our results showed that the PSRI and fD vegetation indices significantly detected grey mould on lettuce grown under both lighting systems (HPS and LEDs) the day after inoculation. The results conclusively affirmed that NDVI, PSRI, HI, fD, WBI, RVSI, PRI, PRI515, CRI2, SIPI, chlorophyll index PSSRb, and coloration index B were identified as the best indicators for Botrytis cinerea infection on green-leaf lettuce (Lactuca sativa L. cv Little Gem) at the early stage of inoculated lettuce's antioxidative response against grey mould with a significant increase in chlorophyll indices.
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Affiliation(s)
- Asta Kupčinskienė
- Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, Kaunas Str. 30, LT-54333 Babtai, Lithuania; (A.B.); (N.R.); (A.V.); (A.M.); (V.V.-K.)
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8
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Wang L, Wu X, Xing Q, Zhao Y, Yu B, Ma Y, Wang F, Qi H. PIF8-WRKY42-mediated salicylic acid synthesis modulates red light induced powdery mildew resistance in oriental melon. PLANT, CELL & ENVIRONMENT 2023; 46:1726-1742. [PMID: 36759948 DOI: 10.1111/pce.14560] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/18/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
Light signals and plant hormones are involved in regulating the growth, development and stress resistance of plants; however, it remains unclear whether light affects hormones and thus pathogen resistance in oriental melon. Here, we found that red light promoted salicylic acid (SA) accumulation and powdery mildew resistance by activating the transcription of CmICS, the key gene for SA biosynthesis, and silencing CmICS seriously weakened the induction effect of red light on powdery mildew resistance in oriental melon leaves. Further studies showed that red light induced the expression of CmWRKY42 under powdery mildew stress, and CmWRKY42 directly bound to the CmICS promoter to activate its expression and promote the accumulation of SA under red light. Furthermore, we found that PHYTOCHROME INTERACTING FACTOR 8 (PIF8), as a negative regulator of SA biosynthesis, inhibits CmWRKY42 transcriptional activation by binding to the CmWRKY42 promoter, and thus inhibits transcriptional activation of CmICS by CmWRKY42. Also, CmPIF8 binds to the CmICS promoter and directly inhibits its transcription. In conclusion, our study revealed a new molecular mechanism of the relationship between red light-SA-powdery mildew resistance and provided a theoretical basis for resistance breeding of oriental melon.
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Affiliation(s)
- Lixia Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Xutong Wu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Qiaojuan Xing
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Yaping Zhao
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Bo Yu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Yue Ma
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Feng Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Hongyan Qi
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
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9
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Breen S, McLellan H, Birch PRJ, Gilroy EM. Tuning the Wavelength: Manipulation of Light Signaling to Control Plant Defense. Int J Mol Sci 2023; 24:ijms24043803. [PMID: 36835216 PMCID: PMC9958957 DOI: 10.3390/ijms24043803] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023] Open
Abstract
The growth-defense trade-off in plants is a phenomenon whereby plants must balance the allocation of their resources between developmental growth and defense against attack by pests and pathogens. Consequently, there are a series of points where growth signaling can negatively regulate defenses and where defense signaling can inhibit growth. Light perception by various photoreceptors has a major role in the control of growth and thus many points where it can influence defense. Plant pathogens secrete effector proteins to manipulate defense signaling in their hosts. Evidence is emerging that some of these effectors target light signaling pathways. Several effectors from different kingdoms of life have converged on key chloroplast processes to take advantage of regulatory crosstalk. Moreover, plant pathogens also perceive and react to light in complex ways to regulate their own growth, development, and virulence. Recent work has shown that varying light wavelengths may provide a novel way of controlling or preventing disease outbreaks in plants.
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Affiliation(s)
- Susan Breen
- Division of Plant Sciences, University of Dundee, At James Hutton Institute, Errol Road, Invergowrie, Dundee DD2 5DA, UK
| | - Hazel McLellan
- Division of Plant Sciences, University of Dundee, At James Hutton Institute, Errol Road, Invergowrie, Dundee DD2 5DA, UK
| | - Paul R. J. Birch
- Division of Plant Sciences, University of Dundee, At James Hutton Institute, Errol Road, Invergowrie, Dundee DD2 5DA, UK
- Cell and Molecular Sciences, James Hutton Institute, Errol Road, Invergowrie, Dundee DD2 5DA, UK
| | - Eleanor M. Gilroy
- Cell and Molecular Sciences, James Hutton Institute, Errol Road, Invergowrie, Dundee DD2 5DA, UK
- Correspondence: ; Tel.: +44-1382568827
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10
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Shang J, Zhao LP, Yang XM, Qi XL, Yu JF, Du JB, Li K, He CS, Wang WM, Yang WY. Soybean balanced the growth and defense in response to SMV infection under different light intensities. FRONTIERS IN PLANT SCIENCE 2023; 14:1150870. [PMID: 37152165 PMCID: PMC10154679 DOI: 10.3389/fpls.2023.1150870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/08/2023] [Indexed: 05/09/2023]
Abstract
Light is essential for the growth and defense of soybean. It is not clear how soybeans adjust their defenses to different light environments with different cropping patterns. The mechanism of soybean response to Soybean mosaic virus (SMV) infection under different light intensities was analyzed by RNA-seq sequencing method. Enrichment analysis illustrated that most defense-related genes were down-regulated in the dark and the shade, and up-regulated under hard light and normal light. Soybean can resist SMV infection mainly by activating salicylic acid signaling pathway. Light is essential for activating salicylic acid defense signaling pathways. With the increase of light intensity, the oxidative damage of soybean leaves was aggravated, which promoted the infection of virus. When light was insufficient, the growth of soybean was weak, and the plant-pathogen interaction pathway, MAPK pathway and hormone defense pathway in infected soybean was inhibited. Under hard light, some defense genes in infected soybean were down-regulated to reduce the degree of oxidative damage. The expression of differentially expressed genes was verified by real-time fluorescence quantitative RT-PCR. In order to adapt to the change of light intensity, soybean balanced allocation of resources between growth and defense through a series regulation of gene expression. The results of this study will provide a theoretical basis for the research of SMV resistance in intercropping soybean.
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Affiliation(s)
- Jing Shang
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Jing Shang,
| | - Lu-Ping Zhao
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Xin-Miao Yang
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Xiao-Li Qi
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Jin-Feng Yu
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Jun-Bo Du
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Kai Li
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Cheng-Shan He
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Wen-Ming Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest, Sichuan Agricultural University, Chengdu, China
| | - Wen-Yu Yang
- Sichuan Engineering Research Center for Crop Strip Intercropping System and College of Agronomy, Sichuan Agricultural University, Chengdu, China
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11
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Xanthomonas
Infection Transforms the Apoplast into an Accessible and Habitable Niche for Salmonella enterica. Appl Environ Microbiol 2022; 88:e0133022. [PMID: 36314834 PMCID: PMC9680631 DOI: 10.1128/aem.01330-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bacterial spot disease caused by
Xanthomonas
species devastates tomato production worldwide. Salmonellosis outbreaks from consumption of raw produce have been linked to the arrival of
Salmonella enterica
on crop plants in the field via contaminated irrigation water.
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12
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Wang J, Wang A, Luo Q, Hu Z, Ma Q, Li Y, Lin T, Liang X, Yu J, Foyer CH, Shi K. Glucose sensing by regulator of G protein signaling 1 (RGS1) plays a crucial role in coordinating defense in response to environmental variation in tomato. THE NEW PHYTOLOGIST 2022; 236:561-575. [PMID: 35789001 DOI: 10.1111/nph.18356] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Low light intensities affect the outbreak of plant diseases. However, the underlying molecular mechanisms remain poorly understood. High-performance liquid chromatography analysis of tomato (Solanum lycopersicum) revealed that apoplastic glucose (Glc) levels decreased in response to low light. Conversely, low-light-induced susceptibility to Pseudomonas syringae pv tomato (Pst) DC3000 was significantly alleviated by exogenous Glc treatment. Using cell-based biolayer interferometry assays, we found that Glc specifically binds to the tomato regulator of G protein signaling 1 (RGS1). Laser scanning confocal microscopy imaging revealed that Glc triggers RGS1 endocytosis, which influences the uncoupling of the RGS1-Gα (GPA1) and GPA1-Gβ (SlGB1) proteins, in a dose- and duration-dependent manner. Analysis of G protein single and double mutants revealed that RGS1 negatively regulates disease resistance under low light and is required for Glc-enhanced defense. Downstream of RGS1-Glc binding, GPA1 negatively mediates the light-intensity-regulated defense, whereas SlGB1 positively regulates this process. These results reveal a novel light-intensity-responsive defense system that is mediated by a Glc-RGS1-G protein signaling pathway. This information will be critical for future investigations of how plant cells sense extracellular sugars and adjust defense under different environments, as well as for genetic engineering approaches to improve stress resilience.
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Affiliation(s)
- Jiao Wang
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Anran Wang
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Qian Luo
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Zhangjian Hu
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Qiaomei Ma
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Yimei Li
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Teng Lin
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Xiao Liang
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
| | - Jingquan Yu
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
- Hainan Insitute, Zhejiang University, Sanya, 572025, China
| | - Christine H Foyer
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, B15 2TT, UK
| | - Kai Shi
- Department of Horticulture, Zhejiang University, Hangzhou, 310058, China
- Hainan Insitute, Zhejiang University, Sanya, 572025, China
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13
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Zhao Y, Vlasselaer L, Ribeiro B, Terzoudis K, Van den Ende W, Hertog M, Nicolaï B, De Coninck B. Constitutive Defense Mechanisms Have a Major Role in the Resistance of Woodland Strawberry Leaves Against Botrytis cinerea. FRONTIERS IN PLANT SCIENCE 2022; 13:912667. [PMID: 35874021 PMCID: PMC9298464 DOI: 10.3389/fpls.2022.912667] [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: 04/04/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
The necrotrophic fungus Botrytis cinerea is a major threat to strawberry cultivation worldwide. By screening different Fragaria vesca genotypes for susceptibility to B. cinerea, we identified two genotypes with different resistance levels, a susceptible genotype F. vesca ssp. vesca Tenno 3 (T3) and a moderately resistant genotype F. vesca ssp. vesca Kreuzkogel 1 (K1). These two genotypes were used to identify the molecular basis for the increased resistance of K1 compared to T3. Fungal DNA quantification and microscopic observation of fungal growth in woodland strawberry leaves confirmed that the growth of B. cinerea was restricted during early stages of infection in K1 compared to T3. Gene expression analysis in both genotypes upon B. cinerea inoculation suggested that the restricted growth of B. cinerea was rather due to the constitutive resistance mechanisms of K1 instead of the induction of defense responses. Furthermore, we observed that the amount of total phenolics, total flavonoids, glucose, galactose, citric acid and ascorbic acid correlated positively with higher resistance, while H2O2 and sucrose correlated negatively. Therefore, we propose that K1 leaves are more resistant against B. cinerea compared to T3 leaves, prior to B. cinerea inoculation, due to a lower amount of innate H2O2, which is attributed to a higher level of antioxidants and antioxidant enzymes in K1. To conclude, this study provides important insights into the resistance mechanisms against B. cinerea, which highly depend on the innate antioxidative profile and specialized metabolites of woodland strawberry leaves.
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Affiliation(s)
- Yijie Zhao
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Leuven, Belgium
- Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
| | - Liese Vlasselaer
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
| | - Bianca Ribeiro
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
| | - Konstantinos Terzoudis
- Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
| | - Wim Van den Ende
- KU Leuven Plant Institute, Heverlee, Belgium
- Laboratory of Molecular Plant Biology, Department of Biology, KU Leuven, Leuven, Belgium
| | - Maarten Hertog
- Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
| | - Bart Nicolaï
- Division of Mechatronics, Biostatistics and Sensors, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
- Flanders Centre of Postharvest Technology, Leuven, Belgium
| | - Barbara De Coninck
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Leuven, Belgium
- KU Leuven Plant Institute, Heverlee, Belgium
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14
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Nguyen TH, Goossens A, Lacchini E. Jasmonate: A hormone of primary importance for plant metabolism. CURRENT OPINION IN PLANT BIOLOGY 2022; 67:102197. [PMID: 35248983 DOI: 10.1016/j.pbi.2022.102197] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/26/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Over the years, jasmonates (JAs) have become recognized as one of the main plant hormones that regulate stress responses by activating defense programs and the production of specialized metabolites. High JA levels have been associated with reduced plant growth, supposedly as a result of the reallocation of carbon sources from primary growth to the biosynthesis of defense compounds. Recent advances suggest however that tight regulatory networks integrate several sensing pathways to steer plant metabolism, and thereby drive the trade-off between growth and defense. In this review, we discuss how JA influences primary metabolism and how it is connected to light-regulated processes, nutrient sensing and energy metabolism. Finally, we speculate that JA, in a conceptual parallelism with adrenaline for humans, overall boosts cellular processes to keep up with an increased metabolic demand during harsh times.
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Affiliation(s)
- Trang Hieu Nguyen
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, B9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, B-9052 Ghent, Belgium
| | - Alain Goossens
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, B9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, B-9052 Ghent, Belgium.
| | - Elia Lacchini
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, B9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, B-9052 Ghent, Belgium
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15
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Wang D, Dawadi B, Qu J, Ye J. Light-Engineering Technology for Enhancing Plant Disease Resistance. FRONTIERS IN PLANT SCIENCE 2022; 12:805614. [PMID: 35251062 PMCID: PMC8891579 DOI: 10.3389/fpls.2021.805614] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Insect vector-borne diseases are a major constraint to a wide variety of crops. Plants integrate environmental light and internal signalings to defend dual stresses both from the vector insects and vector-transmitted pathogens. In this review, we highlight a studies that demonstrate how light regulates plants deploying mechanisms against vector-borne diseases. Four major host defensive pathways involved in the host defense network against multiple biotic stresses are reviewed: innate immunity, phytohormone signaling, RNA interference, and protein degradation. The potential with light-engineering technology with light emitting diodes (LEDs) and genome engineering technology for fine-tuning crop defense and yield are also discussed.
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Affiliation(s)
- Duan Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Bishnu Dawadi
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Jing Qu
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, China
| | - Jian Ye
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
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16
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Courbier S, Hartman S. WRKYs work to limit root growth in response to shade. PLANT PHYSIOLOGY 2022; 188:937-938. [PMID: 34791438 PMCID: PMC8825341 DOI: 10.1093/plphys/kiab525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Sarah Courbier
- Institute of Biology II, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Centre for Integrative Biological Signaling Studies (CIBSS), University of Freiburg, Freiburg, Germany
| | - Sjon Hartman
- Institute of Biology II, Faculty of Biology, University of Freiburg, Freiburg, Germany
- Centre for Integrative Biological Signaling Studies (CIBSS), University of Freiburg, Freiburg, Germany
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17
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Xiang S, Wu S, Jing Y, Chen L, Yu D. Phytochrome B regulates jasmonic acid-mediated defense response against Botrytis cinerea in Arabidopsis. PLANT DIVERSITY 2022; 44:109-115. [PMID: 35281129 PMCID: PMC8897165 DOI: 10.1016/j.pld.2021.01.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/14/2021] [Accepted: 01/26/2021] [Indexed: 05/11/2023]
Abstract
The phytochrome B mediated light signaling integrates with various phytohormone signalings to control plant immune response. However, it is still unclear whether phyB-mediated light signaling has an effect on the biosynthesis of jasmonate during plant defense response against Botrytis cinerea. In this study, we demonstrated that phyB-mediated light signaling has a role in this process. Initially, we confirmed that phyb plants were obviously less resistant to B. cinerea while phyB overexpressing plants showed significantly enhanced resistance. We also found that the expression of numerous JA biosynthesis genes was promoted upon treatment with red or white light when compared to that of darkness, and that this promotion is dependent on phyB. Consistent with the gene expression results, phyb plants accumulated reduced pool of JA-Ile, indicating that phyB-mediated light signaling indeed increased JA biosynthesis. Further genetic analysis showed that light-mediated JAZ9 degradation and phyB-enhanced resistance were dependent on the receptor COI1, and that pif1/3/4/5 (pifq) can largely rescue the severe symptom of phyb. Taken together, our study demonstrates that phyB may participate in plant defense against B. cinerea through the modulation of the biosynthesis of JA.
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Affiliation(s)
- Shengyuan Xiang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Songguo Wu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yifen Jing
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ligang Chen
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- Corresponding author. CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China; Fax: +86 871 65160916.
| | - Diqiu Yu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China
- Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, Yunnan, 666303, China
- Corresponding author. CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China; Fax: +86 871 65160916.
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18
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Courbier S, Snoek BL, Kajala K, Li L, van Wees SCM, Pierik R. Mechanisms of far-red light-mediated dampening of defense against Botrytis cinerea in tomato leaves. PLANT PHYSIOLOGY 2021; 187:1250-1266. [PMID: 34618050 PMCID: PMC8566310 DOI: 10.1093/plphys/kiab354] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Plants detect neighboring competitors through a decrease in the ratio between red and far-red light (R:FR). This decreased R:FR is perceived by phytochrome photoreceptors and triggers shade avoidance responses such as shoot elongation and upward leaf movement (hyponasty). In addition to promoting elongation growth, low R:FR perception enhances plant susceptibility to pathogens: the growth-defense tradeoff. Although increased susceptibility in low R:FR has been studied for over a decade, the associated timing of molecular events is still unknown. Here, we studied the chronology of FR-induced susceptibility events in tomato (Solanum lycopersicum) plants pre-exposed to either white light (WL) or WL supplemented with FR light (WL+FR) prior to inoculation with the necrotrophic fungus Botrytis cinerea (B.c.). We monitored the leaf transcriptional changes over a 30-h time course upon infection and followed up with functional studies to identify mechanisms. We found that FR-induced susceptibility in tomato is linked to a general dampening of B.c.-responsive gene expression, and a delay in both pathogen recognition and jasmonic acid-mediated defense gene expression. In addition, we found that the supplemental FR-induced ethylene emissions affected plant immune responses under the WL+FR condition. This study improves our understanding of the growth-immunity tradeoff, while simultaneously providing leads to improve tomato resistance against pathogens in dense cropping systems.
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Affiliation(s)
- Sarah Courbier
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, The Netherlands
| | - Basten L Snoek
- Theoretical Biology and Bioinformatics, Institute of Biodynamics and Biocomplexity, Utrecht University, The Netherlands
| | - Kaisa Kajala
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, The Netherlands
| | - Linge Li
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, The Netherlands
| | - Saskia C M van Wees
- Plant-Microbe Interactions, Institute of Environmental Biology, Utrecht University, The Netherlands
| | - Ronald Pierik
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, The Netherlands
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19
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Hou S, Thiergart T, Vannier N, Mesny F, Ziegler J, Pickel B, Hacquard S. A microbiota-root-shoot circuit favours Arabidopsis growth over defence under suboptimal light. NATURE PLANTS 2021; 7:1078-1092. [PMID: 34226690 PMCID: PMC8367822 DOI: 10.1038/s41477-021-00956-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 06/02/2021] [Indexed: 05/03/2023]
Abstract
Bidirectional root-shoot signalling is probably key in orchestrating stress responses and ensuring plant survival. Here, we show that Arabidopsis thaliana responses to microbial root commensals and light are interconnected along a microbiota-root-shoot axis. Microbiota and light manipulation experiments in a gnotobiotic plant system reveal that low photosynthetically active radiation perceived by leaves induces long-distance modulation of root bacterial communities but not fungal or oomycete communities. Reciprocally, microbial commensals alleviate plant growth deficiency under low photosynthetically active radiation. This growth rescue was associated with reduced microbiota-induced aboveground defence responses and altered resistance to foliar pathogens compared with the control light condition. Inspection of a set of A. thaliana mutants reveals that this microbiota- and light-dependent growth-defence trade-off is directly explained by belowground bacterial community composition and requires the host transcriptional regulator MYC2. Our work indicates that aboveground stress responses in plants can be modulated by signals from microbial root commensals.
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Affiliation(s)
- Shiji Hou
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | | | - Nathan Vannier
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Fantin Mesny
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Jörg Ziegler
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Halle, Germany
| | - Brigitte Pickel
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Stéphane Hacquard
- Max Planck Institute for Plant Breeding Research, Cologne, Germany.
- Cluster of Excellence on Plant Sciences (CEPLAS), Max Planck Institute for Plant Breeding Research, Cologne, Germany.
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20
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Krahmer J, Abbas A, Mengin V, Ishihara H, Romanowski A, Furniss JJ, Moraes TA, Krohn N, Annunziata MG, Feil R, Alseekh S, Obata T, Fernie AR, Stitt M, Halliday KJ. Phytochromes control metabolic flux, and their action at the seedling stage determines adult plant biomass. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:3263-3278. [PMID: 33544130 DOI: 10.1093/jxb/erab038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
Phytochrome photoreceptors are known to regulate plastic growth responses to vegetation shade. However, recent reports also suggest an important role for phytochromes in carbon resource management, metabolism, and growth. Here, we use 13CO2 labelling patterns in multiallele phy mutants to investigate the role of phytochrome in the control of metabolic fluxes. We also combine quantitative data of 13C incorporation into protein and cell wall polymers, gas exchange measurements, and system modelling to investigate why biomass is decreased in adult multiallele phy mutants. Phytochrome influences the synthesis of stress metabolites such as raffinose and proline, and the accumulation of sugars, possibly through regulating vacuolar sugar transport. Remarkably, despite their modified metabolism and vastly altered architecture, growth rates in adult phy mutants resemble those of wild-type plants. Our results point to delayed seedling growth and smaller cotyledon size as the cause of the adult-stage phy mutant biomass defect. Our data signify a role for phytochrome in metabolic stress physiology and carbon partitioning, and illustrate that phytochrome action at the seedling stage sets the trajectory for adult biomass production.
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Affiliation(s)
- Johanna Krahmer
- Institute of Molecular Plant Sciences, School of Biological Sciences, Daniel Rutherford Building, Max Born Crescent, Kings Buildings, University of Edinburgh, Edinburgh, UK
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Ammad Abbas
- Institute of Molecular Plant Sciences, School of Biological Sciences, Daniel Rutherford Building, Max Born Crescent, Kings Buildings, University of Edinburgh, Edinburgh, UK
| | - Virginie Mengin
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | - Hirofumi Ishihara
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | - Andrés Romanowski
- Institute of Molecular Plant Sciences, School of Biological Sciences, Daniel Rutherford Building, Max Born Crescent, Kings Buildings, University of Edinburgh, Edinburgh, UK
| | - James J Furniss
- Institute of Molecular Plant Sciences, School of Biological Sciences, Daniel Rutherford Building, Max Born Crescent, Kings Buildings, University of Edinburgh, Edinburgh, UK
- Division of Genetics and Genomics, Roslin Institute, University of Edinburgh, Easter Bush, Edinburgh, UK
| | | | - Nicole Krohn
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | | | - Regina Feil
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | - Saleh Alseekh
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | - Toshihiro Obata
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
- Institute of Agriculture and Natural Resources, Department of Biochemistry, University of Nebraska, Lincoln, NE, USA
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | - Mark Stitt
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg, Potsdam Golm, Germany
| | - Karen J Halliday
- Institute of Molecular Plant Sciences, School of Biological Sciences, Daniel Rutherford Building, Max Born Crescent, Kings Buildings, University of Edinburgh, Edinburgh, UK
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21
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Stamelou ML, Sperdouli I, Pyrri I, Adamakis IDS, Moustakas M. Hormetic Responses of Photosystem II in Tomato to Botrytis cinerea. PLANTS 2021; 10:plants10030521. [PMID: 33802218 PMCID: PMC8000511 DOI: 10.3390/plants10030521] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/02/2021] [Accepted: 03/07/2021] [Indexed: 02/07/2023]
Abstract
Botrytis cinerea, a fungal pathogen that causes gray mold, is damaging more than 200 plant species, and especially tomato. Photosystem II (PSII) responses in tomato (Solanum lycopersicum L.) leaves to Botrytis cinerea spore suspension application were evaluated by chlorophyll fluorescence imaging analysis. Hydrogen peroxide (H2O2) that was detected 30 min after Botrytis application with an increasing trend up to 240 min, is possibly convening tolerance against B. cinerea at short-time exposure, but when increasing at relative longer exposure, is becoming a damaging molecule. In accordance, an enhanced photosystem II (PSII) functionality was observed 30 min after application of B. cinerea, with a higher fraction of absorbed light energy to be directed to photochemistry (ΦPSΙΙ). The concomitant increase in the photoprotective mechanism of non-photochemical quenching of photosynthesis (NPQ) resulted in a significant decrease in the dissipated non-regulated energy (ΦNO), indicating a possible decreased singlet oxygen (1O2) formation, thus specifying a modified reactive oxygen species (ROS) homeostasis. Therefore, 30 min after application of Botrytis spore suspension, before any visual symptoms appeared, defense response mechanisms were triggered, with PSII photochemistry to be adjusted by NPQ in a such way that PSII functionality to be enhanced, but being fully inhibited at the application spot and the adjacent area, after longer exposure (240 min). Hence, the response of tomato PSII to B. cinerea, indicates a hormetic temporal response in terms of “stress defense response” and “toxicity”, expanding the features of hormesis to biotic factors also. The enhanced PSII functionality 30 min after Botrytis application can possible be related with the need of an increased sugar production that is associated with a stronger plant defense potential through the induction of defense genes.
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Affiliation(s)
- Maria-Lavrentia Stamelou
- Section of Botany, Department of Biology, National and Kapodistrian University of Athens, GR-15784 Athens, Greece; (M.-L.S.); (I.-D.S.A.)
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization–Demeter, Thermi, GR-57001 Thessaloniki, Greece;
| | - Ilektra Sperdouli
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization–Demeter, Thermi, GR-57001 Thessaloniki, Greece;
| | - Ioanna Pyrri
- Section of Ecology & Systematics, Department of Biology, National and Kapodistrian University of Athens, GR-15784 Athens, Greece;
| | - Ioannis-Dimosthenis S. Adamakis
- Section of Botany, Department of Biology, National and Kapodistrian University of Athens, GR-15784 Athens, Greece; (M.-L.S.); (I.-D.S.A.)
| | - Michael Moustakas
- Department of Botany, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
- Correspondence:
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22
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Mouden S, Bac-Molenaar JA, Kappers IF, Beerling EAM, Leiss KA. Elicitor Application in Strawberry Results in Long-Term Increase of Plant Resilience Without Yield Loss. FRONTIERS IN PLANT SCIENCE 2021; 12:695908. [PMID: 34276745 PMCID: PMC8282209 DOI: 10.3389/fpls.2021.695908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/07/2021] [Indexed: 05/13/2023]
Abstract
For a first step integrating elicitor applications into the current IPM strategy increasing plant resilience against pests, we investigated repeated elicitor treatments in a strawberry everbearer nursery and cropping cycle under glass. During nursery methyl-jasmonate (MeJA), testing induction of defenses with plant bioassays was applied every 3 weeks. Thrips damage and reproduction by spider mites, whitefly and aphids were strongly reduced upon elicitor treatment. Subsequently, we applied MeJA every 3 weeks or based on scouting pests during a whole cropping cycle. Thrips leaf bioassays and LC-MS leaf metabolomics were applied to investigate the induction of defenses. Leaf damage by thrips was lower for both MeJA application schemes compared to the control except for the last weeks. While elicitor treatments after scouting also reduced damage, its effect did not last. Thrips damage decreased from vegetative to mature plants during the cropping cycle. At the end of the nursery phase, plants in the elicitor treatment were smaller. Surprisingly, growth during production was not affected by MeJA application, as were fruit yield and quality. LC-MS leaf metabolomics showed strong induction of vegetative plants decreasing during the maturation of plants toward the end of cultivation. Concurrently, no increase in the JA-inducible marker PPO was observed when measured toward the end of cultivation. Mostly flavonoid and phenolic glycosides known as plant defense compounds were induced upon MeJA application. While induced defense decreased with the maturation of plants, constitutive defense increased as measured in the leaf metabolome of control plants. Our data propose that young, relatively small plant stages lack constitutive defense necessitating an active JA defense response. As plants, mature constitutive defense metabolites seem to accumulate, providing a higher level of basal resistance. Our results have important implications for but are not limited to strawberry cultivation. We demonstrated that repeated elicitor application could be deployed as part of an integrated approach for sustainable crop protection by vertical integration with other management tactics and horizontal integration to control multiple pests concurrently. This approach forms a promising potential for long-term crop protection in greenhouses.
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Affiliation(s)
- Sanae Mouden
- Plant Health Team, Business Unit Greenhouse Horticulture, Plant Science Group, Wageningen University and Research, Wageningen, Netherlands
| | - Johanna A. Bac-Molenaar
- Plant Health Team, Business Unit Greenhouse Horticulture, Plant Science Group, Wageningen University and Research, Wageningen, Netherlands
- *Correspondence: Johanna A. Bac-Molenaar
| | - Iris F. Kappers
- Laboratory of Plant Physiology, Plant Science Group, Wageningen University, Wageningen, Netherlands
| | - Ellen A. M. Beerling
- Plant Health Team, Business Unit Greenhouse Horticulture, Plant Science Group, Wageningen University and Research, Wageningen, Netherlands
| | - Kirsten A. Leiss
- Plant Health Team, Business Unit Greenhouse Horticulture, Plant Science Group, Wageningen University and Research, Wageningen, Netherlands
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Li S, Hamani AKM, Si Z, Liang Y, Gao Y, Duan A. Leaf Gas Exchange of Tomato Depends on Abscisic Acid and Jasmonic Acid in Response to Neighboring Plants under Different Soil Nitrogen Regimes. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1674. [PMID: 33260470 PMCID: PMC7759899 DOI: 10.3390/plants9121674] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/26/2020] [Accepted: 11/26/2020] [Indexed: 12/23/2022]
Abstract
High planting density and nitrogen shortage are two important limiting factors for crop yield. Phytohormones, abscisic acid (ABA), and jasmonic acid (JA), play important roles in plant growth. A pot experiment was conducted to reveal the role of ABA and JA in regulating leaf gas exchange and growth in response to the neighborhood of plants under different nitrogen regimes. The experiment included two factors: two planting densities per pot (a single plant or four competing plants) and two N application levels per pot (1 and 15 mmol·L-1). Compared to when a single plant was grown per pot, neighboring competition decreased stomatal conductance (gs), transpiration (Tr) and net photosynthesis (Pn). Shoot ABA and JA and the shoot-to-root ratio increased in response to neighbors. Both gs and Pn were negatively related to shoot ABA and JA. In addition, N shortage stimulated the accumulation of ABA in roots, especially for competing plants, whereas root JA in competing plants did not increase in N15. Pearson's correlation coefficient (R2) of gs to ABA and gs to JA was higher in N1 than in N15. As compared to the absolute value of slope of gs to shoot ABA in N15, it increased in N1. Furthermore, the stomatal limitation and non-stomatal limitation of competing plants in N1 were much higher than in other treatments. It was concluded that the accumulations of ABA and JA in shoots play a coordinating role in regulating gs and Pn in response to neighbors; N shortage could intensify the impact of competition on limiting carbon fixation and plant growth directly.
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Affiliation(s)
- Shuang Li
- Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture and Rural Affairs, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; (S.L.); (A.K.M.H.); (Z.S.); (Y.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (GSCAAS), Beijing 100081, China
| | - Abdoul Kader Mounkaila Hamani
- Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture and Rural Affairs, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; (S.L.); (A.K.M.H.); (Z.S.); (Y.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (GSCAAS), Beijing 100081, China
| | - Zhuanyun Si
- Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture and Rural Affairs, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; (S.L.); (A.K.M.H.); (Z.S.); (Y.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (GSCAAS), Beijing 100081, China
| | - Yueping Liang
- Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture and Rural Affairs, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; (S.L.); (A.K.M.H.); (Z.S.); (Y.L.)
| | - Yang Gao
- Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture and Rural Affairs, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; (S.L.); (A.K.M.H.); (Z.S.); (Y.L.)
| | - Aiwang Duan
- Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture and Rural Affairs, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; (S.L.); (A.K.M.H.); (Z.S.); (Y.L.)
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24
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Hartman S. MED25 Mediates Shade-Induced Hypocotyl Elongation in Tomato. PLANT PHYSIOLOGY 2020; 184:1217-1218. [PMID: 33139486 PMCID: PMC7608160 DOI: 10.1104/pp.20.01324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Affiliation(s)
- Sjon Hartman
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
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