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Golubkina N, Kharchenko V, Moldovan A, Antoshkina M, Ushakova O, Sękara A, Stoleru V, Murariu OC, Tallarita AV, Sannino M, Caruso G. Effect of Selenium and Garlic Extract Treatments of Seed-Addressed Lettuce Plants on Biofortification Level, Seed Productivity and Mature Plant Yield and Quality. PLANTS (BASEL, SWITZERLAND) 2024; 13:1190. [PMID: 38732406 PMCID: PMC11085852 DOI: 10.3390/plants13091190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 05/13/2024]
Abstract
The enhancement of the plant seed yield and quality represents the basis of the successful productivity of the deriving crop. The effect of single and combined foliar treatments of lettuce plants with sodium selenate and garlic bulb extract on seed yield and quality and on mature plant biochemical characteristics was investigated using four lettuce cultivars (Bouquet, Picnic, Moskovsky parnikovy and Cavalier). The seed production of plants treated with Se increased by 20-41%, compared to the untreated control plants, while the augmentation was as much as 10-23% and 17-27% under garlic extract and the joint application of Se and garlic, respectively. Garlic extract stimulated the accumulation of Se in lettuce seeds, which rose by 1.21-1.29 times compared to the Se-treated plants. The proline levels in lettuce seeds exceeded the corresponding values recorded in the control ones by 1.32-1.64 times in the case of the Se supply, 1.10-1.47 times upon garlic extract application and 1.09-1.31 times under the combined Se/garlic treatment. All the treatments given to lettuce plants increased the leaf weight by 1.10-1.30 times, compared to the untreated control. The seed Se levels positively correlated with the leaf weight (r = 0.621; p < 0.005), chlorophyll (r = 0.672, p < 0.002) and total antioxidant activity (AOA; r = 0.730, p < 0.001) of plants grown from these seeds. Positive correlations were also recorded between the seed proline content and lettuce plant leaf weight, chlorophyll and AOA (r = 0.868, 0.811 and 0.815, respectively, at p < 0.001). Lettuce yield was positively correlated with the leaf AOA, chlorophyll and ascorbic acid content (r = 0.942, 0.921 and 0.665, respectively, at p < 0.001). The results indicate high prospects of Na2SeO4 and garlic extract application to seed-addressed lettuce plants, to improve seed productivity and quality, as well as lettuce yield and quality.
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Affiliation(s)
- Nadezhda Golubkina
- Federal Scientific Vegetable Center, 143072 Moscow, Russia; (V.K.); (A.M.); (M.A.); (O.U.)
| | - Viktor Kharchenko
- Federal Scientific Vegetable Center, 143072 Moscow, Russia; (V.K.); (A.M.); (M.A.); (O.U.)
| | - Anastasia Moldovan
- Federal Scientific Vegetable Center, 143072 Moscow, Russia; (V.K.); (A.M.); (M.A.); (O.U.)
| | - Marina Antoshkina
- Federal Scientific Vegetable Center, 143072 Moscow, Russia; (V.K.); (A.M.); (M.A.); (O.U.)
| | - Olga Ushakova
- Federal Scientific Vegetable Center, 143072 Moscow, Russia; (V.K.); (A.M.); (M.A.); (O.U.)
| | - Agnieszka Sękara
- Department of Horticulture, Faculty of Biotechnology and Horticulture, University of Agriculture, 31-120 Krakow, Poland;
| | - Vasile Stoleru
- Department of Horticulture, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 700440 Iasi, Romania;
| | - Otilia Cristina Murariu
- Department of Food Technology, “Ion Ionescu de la Brad” Iasi University of Life Sciences, 700440 Iasi, Romania;
| | - Alessio Vincenzo Tallarita
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy; (A.V.T.); (M.S.); (G.C.)
| | - Maura Sannino
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy; (A.V.T.); (M.S.); (G.C.)
| | - Gianluca Caruso
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy; (A.V.T.); (M.S.); (G.C.)
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Ai J, Wang W, Hu T, Hu H, Wang J, Yan Y, Pang H, Wang Y, Bao C, Wei Q. Identification of Quantitative Trait Loci and Candidate Genes Controlling Seed Dormancy in Eggplant ( Solanum melongena L.). Genes (Basel) 2024; 15:415. [PMID: 38674350 PMCID: PMC11049636 DOI: 10.3390/genes15040415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/28/2024] Open
Abstract
Seed dormancy is a life adaptation trait exhibited by plants in response to environmental changes during their growth and development. The dormancy of commercial seeds is the key factor affecting seed quality. Eggplant seed dormancy is controlled by quantitative trait loci (QTLs), but reliable QTLs related to eggplant dormancy are still lacking. In this study, F2 populations obtained through the hybridization of paternally inbred lines with significant differences in dormancy were used to detect regulatory sites of dormancy in eggplant seeds. Three QTLs (dr1.1, dr2.1, and dr6.1) related to seed dormancy were detected on three chromosomes of eggplant using the QTL-Seq technique. By combining nonsynonymous sites within the candidate regions and gene functional annotation analysis, nine candidate genes were selected from three QTL candidate regions. According to the germination results on the eighth day, the male parent was not dormant, but the female parent was dormant. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to verify the expression of nine candidate genes, and the Smechr0201082 gene showed roughly the same trend as that in the phenotypic data. We proposed Smechr0201082 as the potential key gene involved in regulating the dormancy of eggplant seeds. The results of seed experiments with different concentrations of gibberellin A3 (GA3) showed that, within a certain range, the higher the gibberellin concentration, the earlier the emergence and the higher the germination rate. However, higher concentrations of GA3 may have potential effects on eggplant seedlings. We suggest the use of GA3 at a concentration of 200-250 mg·L-1 to treat dormant seeds. This study provides a foundation for the further exploration of genes related to the regulation of seed dormancy and the elucidation of the molecular mechanism of eggplant seed dormancy and germination.
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Affiliation(s)
- Jiaqi Ai
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou 310021, China
| | - Wuhong Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
| | - Tianhua Hu
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
| | - Haijiao Hu
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
| | - Jinglei Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
| | - Yaqin Yan
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
| | - Hongtao Pang
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou 310021, China
| | - Yong Wang
- Zhumadian Academy of Agricultural Sciences, Zhumadian 463000, China;
| | - Chonglai Bao
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
| | - Qingzhen Wei
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.A.); (W.W.); (T.H.); (H.H.); (J.W.); (Y.Y.); (H.P.); (C.B.)
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Pagano A, Macovei A, Balestrazzi A. Molecular dynamics of seed priming at the crossroads between basic and applied research. PLANT CELL REPORTS 2023; 42:657-688. [PMID: 36780009 PMCID: PMC9924218 DOI: 10.1007/s00299-023-02988-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
The potential of seed priming is still not fully exploited. Our limited knowledge of the molecular dynamics of seed pre-germinative metabolism is the main hindrance to more effective new-generation techniques. Climate change and other recent global crises are disrupting food security. To cope with the current demand for increased food, feed, and biofuel production, while preserving sustainability, continuous technological innovation should be provided to the agri-food sector. Seed priming, a pre-sowing technique used to increase seed vigor, has become a valuable tool due to its potential to enhance germination and stress resilience under changing environments. Successful priming protocols result from the ability to properly act on the seed pre-germinative metabolism and stimulate events that are crucial for seed quality. However, the technique still requires constant optimization, and researchers are committed to addressing some key open questions to overcome such drawbacks. In this review, an update of the current scientific and technical knowledge related to seed priming is provided. The rehydration-dehydration cycle associated with priming treatments can be described in terms of metabolic pathways that are triggered, modulated, or turned off, depending on the seed physiological stage. Understanding the ways seed priming affects, either positively or negatively, such metabolic pathways and impacts gene expression and protein/metabolite accumulation/depletion represents an essential step toward the identification of novel seed quality hallmarks. The need to expand the basic knowledge on the molecular mechanisms ruling the seed response to priming is underlined along with the strong potential of applied research on primed seeds as a source of seed quality hallmarks. This route will hasten the implementation of seed priming techniques needed to support sustainable agriculture systems.
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Affiliation(s)
- Andrea Pagano
- Department of Biology and Biotechnology 'L. Spallanzani', Via Ferrata 1, 27100, Pavia, Italy
| | - Anca Macovei
- Department of Biology and Biotechnology 'L. Spallanzani', Via Ferrata 1, 27100, Pavia, Italy
- National Biodiversity Future Center (NBFC), 90133, Palermo, Italy
| | - Alma Balestrazzi
- Department of Biology and Biotechnology 'L. Spallanzani', Via Ferrata 1, 27100, Pavia, Italy.
- National Biodiversity Future Center (NBFC), 90133, Palermo, Italy.
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Reis LP, de Lima E Borges EE, Bernardes RC, de Souza GA, Dos Santos Araújo R. Heat stress negatively affects physiology and morphology during germination of Ormosia coarctata (Fabaceae, Papilionoideae). PROTOPLASMA 2022; 259:1427-1439. [PMID: 35171369 DOI: 10.1007/s00709-022-01743-4] [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: 08/12/2021] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Research on the morphophysiological behavior of forest seeds during germination with respect to climate change is scarce. To date, there have been no studies on the biochemical or morphological aspects of Ormosia spp. In this study, we subjected Ormosia coarctata seeds to various temperature conditions to investigate temperature-dependent impacts on morphology, reactive oxygen species (ROS) generation, antioxidant systems, and storage systems. Analyses were performed on seeds exposed to 25, 35, and 40 °C for 48, 96, and 144 h. The morphology was evaluated by radiation using a Faxitron MX-20 device. ROS production (superoxide anion and hydrogen peroxide), malonaldehyde (MDA), carbonylated proteins, antioxidant enzyme activity (superoxide dismutase [SOD], ascorbate peroxidase [APX], catalase [CAT], and peroxidase [POX]), β-carotene, lycopene, glucose, and reserve enzyme activity (α- and β-amylase, lipase, and protease) were analyzed by spectrophotometry. Heat stress (40 °C) decreased germination by 76.2% and 78.1% (compared to 25 and 35 °C, respectively), caused damage to the external morphology of the seed, increased the content of ROS, MDA, and carbonylated proteins, and reduced APX, CAT, and POX activity. Furthermore, heat stress decreased glucose content and α-amylase activity. These results suggest that an increase of 5 °C in temperature negatively affects germination, promotes oxidative stress, and induces deterioration in O. coarctata seeds.
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Affiliation(s)
- Luciane Pereira Reis
- Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
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Ali M, Ahmad H, Amin B, Atif MJ, Cheng Z. Induce defense response of DADS in eggplants during the biotrophic phase of Verticillium dahliae. BMC PLANT BIOLOGY 2022; 22:172. [PMID: 35379184 PMCID: PMC8981950 DOI: 10.1186/s12870-022-03527-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
PURPOSE Verticillium wilt is a destructive vascular disease in eggplants. The complex defensive mechanisms of eggplant against this disease are very limited. METHODS Our work examined the bioactive properties of garlic allelochemical diallyl disulfide (DADS) as potential biostimulants for defense against V. dahliae in eggplant seedlings. We, therefore, foliar sprayed DADS on eggplants to study the defense response during the early biotrophic phase of V. dahliae (a hemibiotroph). RESULTS DADS application significantly increased root peroxidase (POD), phenylalanine-ammonia lyase (PAL) enzyme activity, and reduced H2O2 levels after 24 h of fungal inoculation. Salicylic acid (SA) in leaves and roots was significantly increased while, the jasmonic acid (JA), indole acetic acid (IAA), and abscisic acid (ABA) levels were decreased. The microscopic examinations of V. dahliae infection in roots displayed that the progression of infection was restricted in DADS-treated plants. Depositions of lignin and phenolic compounds such as ferulic acid, p-coumaric acid, and caffeic acid content were significantly higher in DADS-treated plants at 48 h post-inoculation. Similarly, the DADS application up-regulated pathogenesis-related (PR1, PR2, and PR5), mitogen-activated protein kinase (MPK1), and lipoxygenase (LOX) genes. Furthermore, DADS-treated plants exhibited a lower disease severity index (23.3% vs. 57.0% in controls), indicating successful defense against V. dahliae. CONCLUSIONS Our findings concluded that the biological function of garlic allelochemical DADS has a prominent role in the higher defense resistance of eggplants during the early infection of V. dahliae.
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Affiliation(s)
- Muhammad Ali
- Department of Vegetable Science, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Husain Ahmad
- Department of Vegetable Science, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Bakht Amin
- Department of Vegetable Science, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Muhammad Jawaad Atif
- Department of Vegetable Science, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zhihui Cheng
- Department of Vegetable Science, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Ghani MI, Ali A, Atif MJ, Ali M, Amin B, Cheng Z. Arbuscular Mycorrhizal Fungi and Dry Raw Garlic Stalk Amendment Alleviate Continuous Monocropping Growth and Photosynthetic Declines in Eggplant by Bolstering Its Antioxidant System and Accumulation of Osmolytes and Secondary Metabolites. FRONTIERS IN PLANT SCIENCE 2022; 13:849521. [PMID: 35432401 PMCID: PMC9008779 DOI: 10.3389/fpls.2022.849521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/14/2022] [Indexed: 05/03/2023]
Abstract
Vegetable production under plastic sheds severely threatens regional eco-sustainability via anthropogenic activities (excessive use of agrochemicals, pesticides) and problems associated with replanting. Long-term successive cropping across growing seasons induces continuous cropping stress, whose effects manifest as diminished plant growth. Therefore, it is imperative that we develop environmentally sustainable approaches, such as replacing agrochemicals with vegetable waste like dry raw garlic stalk (DRGS) or use biofertilizers like arbuscular mycorrhizal fungi (AMF) (e.g., Diversispora epigaea). In this study, the influence of AMF on the growth, biochemical attributes, antioxidant defense system, phytohormones, accumulation of osmolytes, phenols, and mineral elements in eggplant grown on DRGS-amended soils under continuous monocropping (CMC) was studied. The results showed that inoculation with AMF or the DRGS amendment could improve the pigments' content, photosynthesis, and antioxidant defense system; augmented phytohormones synthesis (except for ABA), and increased the leaves' mineral nutrients. These parameters were enhanced most by the combined application of AMF and DRGS, which also increased the concentration of osmolytes, including proline, sugars, and free amino acids in eggplant when compared with the control. Furthermore, either AMF and DRGS alone, or in combination, ameliorated the induced stress from continuous cropping by reducing the incidence of Fusarium wilt and production of ROS (reactive oxygen species); lipid peroxidation underwent maximal reduction in plants grown under the combined treatments. The AMF, DRGS, and AMF + DRGS exhibited a lower disease severity index (33.46, 36.42, and 43.01%), respectively, over control. Hence, inoculation with AMF coupled with DRGS amendment alters the photosynthetic attributes in eggplant through the upregulation of its antioxidant system and greater accumulation of osmolytes, which led to the improved growth and yield of eggplant.
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Affiliation(s)
| | - Ahmad Ali
- College of Horticulture, Northwest A&F University, Xianyang, China
| | - Muhammad Jawaad Atif
- College of Horticulture, Northwest A&F University, Xianyang, China
- Horticultural Research Institute, National Agricultural Research Centre, Islamabad, Pakistan
| | - Muhammad Ali
- College of Horticulture, Northwest A&F University, Xianyang, China
| | - Bakht Amin
- College of Horticulture, Northwest A&F University, Xianyang, China
| | - Zhihui Cheng
- College of Horticulture, Northwest A&F University, Xianyang, China
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Jócsák I, Gyalog H, Hoffmann R, Somfalvi-Tóth K. In-Vivo Biophoton Emission, Physiological and Oxidative Responses of Biostimulant-Treated Winter Wheat (Triticum eastivum L.) as Seed Priming Possibility, for Heat Stress Alleviation. PLANTS 2022; 11:plants11050640. [PMID: 35270110 PMCID: PMC8912532 DOI: 10.3390/plants11050640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 11/29/2022]
Abstract
High temperature induces oxidative processes in wheat, the alleviation of which is promising using biostimulants. Priming has been used for enhancing stress tolerance of seedlings. However, the usage of biostimulants for priming is an unexplored area under either normal or stress conditions. Therefore, the aim of our study was to evaluate the heat stress alleviation capability of differentially applied biostimulant treatments on wheat seedlings. The investigation included stress parameters (fresh/dry weight ratio, chlorophyll content estimation, antioxidant capacity and lipid oxidation) combined with biophoton emission measurement, since with this latter non-invasive technique, it is possible to measure and elucidate in vivo stress conditions in real-time using lipid oxidation-related photon emissions. We confirmed that a single biostimulant pretreatment increased antioxidant capacity and decreased biophoton release and lipid oxidation, indicating the reduction of the harmful effects of heat stress. Therefore, biophoton emission proved to be suitable for detecting and imaging the effects of heat stress on wheat seedlings for the first time. Two-way analysis of variance (ANOVA) revealed that biostimulant (p = 4.01 × 10−7) treatments, temperature (p = 9.07 × 10−8), and the interaction of the two factors (p = 2.07 × 10−5) had a significant effect on the overall count per second values of biophoton emission, predicting more efficient biostimulant utilization practices, even for seed priming purposes.
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Understanding the Various Strategies for the Management of Fungal Pathogens in Crop Plants in the Current Scenario. Fungal Biol 2022. [DOI: 10.1007/978-981-16-8877-5_25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wu Y, Zheng L, Bing J, Liu H, Zhang G. Deep Sequencing of Small RNA Reveals the Molecular Regulatory Network of AtENO2 Regulating Seed Germination. Int J Mol Sci 2021; 22:ijms22105088. [PMID: 34065034 PMCID: PMC8151434 DOI: 10.3390/ijms22105088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/21/2021] [Accepted: 04/29/2021] [Indexed: 12/29/2022] Open
Abstract
Seed germination is a key step in the new life cycle of plants. In agriculture, we regard the rapid and consistent process of seed germination as one of the necessary conditions to measure the high quality and yield of crops. ENO2 is a key enzyme in glycolysis, which also plays an important role in plant growth and abiotic stress responses. In our study, we found that the time of seed germination in AtENO2 mutation (eno2-) was earlier than that of wild type (WT) in Arabidopsis thaliana. Previous studies have shown that microRNAs (miRNAs) were vital in seed germination. After deep sequencing of small RNA, we found 590 differentially expressed miRNAs in total, of which 87 were significantly differentially expressed miRNAs. By predicting the target genes of miRNAs and analyzing the GO annotation, we have counted 18 genes related to seed germination, including ARF family, TIR1, INVC, RR19, TUDOR2, GA3OX2, PXMT1, and TGA1. MiR9736-z, miR5059-z, ath-miR167a-5p, ath-miR167b, ath-miR5665, ath-miR866-3p, miR10186-z, miR8165-z, ath-miR857, ath-miR399b, ath-miR399c-3p, miR399-y, miR163-z, ath-miR393a-5p, and ath-miR393b-5p are the key miRNAs regulating seed germination-related genes. Through KEGG enrichment analysis, we found that phytohormone signal transduction pathways were significantly enriched, and these miRNAs mentioned above also participate in the regulation of the genes in plant hormone signal transduction pathways, thus affecting the synthesis of plant hormones and further affecting the process of seed germination. This study laid the foundation for further exploration of the AtENO2 regulation for seed germination.
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Forti C, Ottobrino V, Doria E, Bassolino L, Toppino L, Rotino GL, Pagano A, Macovei A, Balestrazzi A. Hydropriming Applied on Fast Germinating Solanum villosum Miller Seeds: Impact on Pre-germinative Metabolism. FRONTIERS IN PLANT SCIENCE 2021; 12:639336. [PMID: 33841466 PMCID: PMC8030258 DOI: 10.3389/fpls.2021.639336] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/02/2021] [Indexed: 05/15/2023]
Abstract
Seed priming can circumvent poor germination rate and uniformity, frequently reported in eggplant (Solanum melongena L.) and its crop wild relatives (CWRs). However, there is still a gap of knowledge on how these treatments impact the pre-germinative metabolism in a genotype- and/or species-dependent manner. The CWR Solanum villosum Miller (hairy nightshade) investigated in this study showed a quite unique profile of fast germination. Although this accelerated germination profile would not apparently require further improvement, we wanted to test whether priming would still be able to impact the pre-germinative metabolism, eventually disclosing the predominant contribution of specific antioxidant components. Hydropriming followed by dry-back resulted in synchronized germination, as revealed by the lowest MGR (Mean Germination Rate) and U (Uncertainty) values, compared to unprimed seeds. No significant changes in ROS (reactive oxygen species) were observed throughout the treatment. Increased tocopherols levels were detected at 2 h of hydropriming whereas, overall, a low lipid peroxidation was evidenced by the malondialdehyde (MDA) assay. Hydropriming resulted in enhanced accumulation of the naturally occurring antioxidant phenolic compounds chlorogenic acid and iso-orientin, found in the dry seeds and ex novo accumulation of rutin. The dynamic changes of the pre-germinative metabolism induced by hydropriming are discussed in view of future applications that might boost the use of eggplant CWRs for breeding, upon upgrade mediated by seed technology.
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Affiliation(s)
- Chiara Forti
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
| | - Valentino Ottobrino
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
| | - Enrico Doria
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
| | - Laura Bassolino
- CREA, Research Centre for Genomics and Bioinformatics, Montanaso Lombardo, Italy
- CREA, Research Centre for Cereal and Industrial Crops, Bologna, Italy
| | - Laura Toppino
- CREA, Research Centre for Genomics and Bioinformatics, Montanaso Lombardo, Italy
| | | | - Andrea Pagano
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
| | - Anca Macovei
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
| | - Alma Balestrazzi
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, University of Pavia, Pavia, Italy
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11
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Cheng F, Ali M, Liu C, Deng R, Cheng Z. Garlic Allelochemical Diallyl Disulfide Alleviates Autotoxicity in the Root Exudates Caused by Long-Term Continuous Cropping of Tomato. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11684-11693. [PMID: 32991155 DOI: 10.1021/acs.jafc.0c03894] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Continuous cropping obstacles seriously affect the sustainable production of tomatoes (Solanum lycopersicum L.). Researchers have found that intercropping with garlic (Allium sativum L.) could alleviate tomato continuous cropping obstacles. Diallyl disulfide (DADS) is the main allelochemical in garlic. However, the mechanism of DADS in alleviating tomato continuous cropping obstacles is still unknown. In this research, aqueous extracts of tomato continuous cropping soil were used to simulate the continuous cropping condition of tomato. Our results showed that DADS increased root activity and chlorophyll content and improved the activity of antioxidant enzymes (superoxide dismutase (SOD), peroxidase (POD), and phenylalanine ammonia-lyase (PAL)) and the metabolism of nonenzymatic antioxidants (glutathione (GSH) and oxidized glutathione (GSSG)) in tomato plants. DADS treatment reduced the content of fatty acid esters in tomato root exudates (e.g., palmitate methyl ester, palmitoleic acid methyl ester, oleic acid methyl ester) and increased the level of substances such as dibutyl phthalate and 2,2'-methylenebis(6-tert-butyl-4-methylphenol). The higher concentrations of palmitate methyl ester inhibited tomato hypocotyl growth, while oleic acid methyl ester inhibited tomato root growth. Moreover, the application of DADS significantly inhibited the secretion of these esters in the root exudates. Therefore, it suggests that DADS may increase tomato resistance and promote tomato plant growth by increasing root activity and photosynthetic capacity and development to reduce autotoxicity of tomato.
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Affiliation(s)
- Fang Cheng
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Chinese Academy of Sciences, Kunming Institute of Botany, Kunming 650201, People's Republic of China
| | - Muhammad Ali
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Ce Liu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Rui Deng
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Zhihui Cheng
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
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12
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Transcriptome Analyses and Antioxidant Activity Profiling Reveal the Role of a Lignin-Derived Biostimulant Seed Treatment in Enhancing Heat Stress Tolerance in Soybean. PLANTS 2020; 9:plants9101308. [PMID: 33023253 PMCID: PMC7601093 DOI: 10.3390/plants9101308] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 12/19/2022]
Abstract
Soybean (Glycine max Merr.) is a worldwide important legume crop, whose growth and yield are negatively affected by heat stress at germination time. Here, we tested the role of a biostimulant based on lignin derivatives, plant-derived amino acids, and molybdenum in enhancing soybean heat stress tolerance when applied on seeds. After treatment with the biostimulant at 35 °C, the seed biometric parameters were positively influenced after 24 h, meanwhile, germination percentage was increased after 72 h (+10%). RNA-Seq analyses revealed a modulation of 879 genes (51 upregulated and 828 downregulated) in biostimulant-treated seeds as compared with the control, at 24 h after incubation at 35 °C. Surprisingly, more than 33% of upregulated genes encoded for ribosomal RNA (rRNA) methyltransferases and proteins involved in the ribosome assembly, acting in a specific protein network. Conversely, the downregulated genes were involved in stress response, hormone signaling, and primary metabolism. Finally, from a biochemical point of view, the dramatic H2O2 reduction 40%) correlated to a strong increase in non-protein thiols (+150%), suggested a lower oxidative stress level in biostimulant-treated seeds, at 24 h after incubation at 35 °C. Our results provide insights on the biostimulant mechanism of action and on its application for seed treatments to improve heat stress tolerance during germination.
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13
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Zhang Z, Fan J, Wu J, Zhang L, Wang J, Zhang B, Wang-Pruski G. Alleviating effect of silicon on melon seed germination under autotoxicity stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109901. [PMID: 31704323 DOI: 10.1016/j.ecoenv.2019.109901] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 10/26/2019] [Accepted: 10/30/2019] [Indexed: 05/25/2023]
Abstract
Melon (Cucumis melo L.) is an important horticultural crop worldwide. Continuous cropping obstacle occurs in many melon cultivation area, resulting in poor plant growth and fruit quality, autotoxicity is the main reason for the obstacle. Silicon (Si) plays an important role in improving the resistance of plants to biotic and abiotic stresses. In this study, melon plant water extracts (MPWE) were used to simulate the autotoxicity stress. Different concentrations of Na2SiO3 (0, 1, 2, 4, 8, 16, 32 mM) were added into MPWE for preliminary concentration screening and alleviating effect determination of Si on melon seed autotoxicity. The results showed that autotoxicity reduced the seed germination index, inhibited the growth of germinated seeds. 2 mM Si significantly increased seed germination index and improved subsequent growth under autotoxicity. The effect of Si showed a concentration-dependent manner, which can be counteracted or even reversed at high concentration. Three treatment combinations, double distilled water, 0.02 g/mL MPWE and 2 mM Na2SiO3 + 0.02 g/mL MPWE were used for subsequent physiology, biochemistry and gene analysis. During the germination of melon seed under autotoxicity, starch degradation ability decreased, amylase activity and amylase gene expression were inhibited, cell membrane lipid peroxidation increased, and antioxidant enzyme activity was abnormal. In Si-addition group, the radicle growth, lateral roots number, starch degradation ability, amylase activity and amylase gene expression level increased. The addition of Si also maintained the activities of superoxide dismutase, catalase and peroxidase and the content of malondialdehyde in a relatively normal state. The change trend of amylase gene and antioxidant enzyme activity was complex, but the acute change coincided with the key stage of seed germination, which occurred when the seed was about to break through or just broken through the seed coat. Appropriate concentration of Si is an effective strategy to alleviate the autotoxicity on melon seed.
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Affiliation(s)
- Zhizhong Zhang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
| | - Jiaru Fan
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Jinghua Wu
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Lizhen Zhang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Jingrong Wang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Beibei Zhang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Gefu Wang-Pruski
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, B2N 5E3, Canada; Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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14
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Forti C, Ottobrino V, Bassolino L, Toppino L, Rotino GL, Pagano A, Macovei A, Balestrazzi A. Molecular dynamics of pre-germinative metabolism in primed eggplant ( Solanum melongena L.) seeds. HORTICULTURE RESEARCH 2020; 7:87. [PMID: 32528699 PMCID: PMC7261768 DOI: 10.1038/s41438-020-0310-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 03/24/2020] [Accepted: 03/30/2020] [Indexed: 05/13/2023]
Abstract
Seed priming, a pre-sowing technique that enhances the antioxidant/DNA repair activities during the pre-germinative metabolism, still retains empirical features. We explore for the first time the molecular dynamics of pre-germinative metabolism in primed eggplant (Solanum melongena L.) seeds in order to identify hallmarks (expression patterns of antioxidant/DNA repair genes combined with free radical profiles) useful to discriminate between high- and low-quality lots. The hydropriming protocol hereby developed anticipated (or even rescued) germination, when applied to lots with variable quality. ROS (reactive oxygen species) raised during hydropriming and dropped after dry-back. Upregulation of antioxidant/DNA repair genes was observed during hydropriming and the subsequent imbibition. Upregulation of SmOGG1 (8-oxoguanine glycosylase/lyase) gene detected in primed seeds at 2 h of imbibition appeared as a promising hallmark. On the basis of these results, the investigation was restricted within the first 2 h of imbibition, to verify whether the molecular landscape was reproducible in different lots. A complex pattern of antioxidant/DNA repair gene expression emerged, reflecting the preponderance of seed lot-specific profiles. Only the low-quality eggplant seeds subjected to hydropriming showed enhanced ROS levels, both in the dry and imbibed state, and this might be a useful signature to discriminate among lots. The plasticity of eggplant pre-germinative metabolism stimulated by priming imposes a plethora of heterogeneous molecular responses that might delay the search for quality hallmarks. However, the information hereby gained could be translated to eggplant wild relatives to speed-up their use in breeding programs or other agronomical applications.
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Affiliation(s)
- Chiara Forti
- Department of Biology and Biotechnology ‘Lazzaro Spallanzani’, University of Pavia, Pavia, Italy
| | - Valentino Ottobrino
- Department of Biology and Biotechnology ‘Lazzaro Spallanzani’, University of Pavia, Pavia, Italy
| | - Laura Bassolino
- CREA-Research Centre for Genomics and Bioinformatics, Montanaso Lombardo, LO Italy
- CREA-Research Centre for Cereal and Industrial Crops, Bologna, Italy
| | - Laura Toppino
- CREA-Research Centre for Genomics and Bioinformatics, Montanaso Lombardo, LO Italy
| | | | - Andrea Pagano
- Department of Biology and Biotechnology ‘Lazzaro Spallanzani’, University of Pavia, Pavia, Italy
- Present Address: Institute of Plant Genetics, Polish Academy of Sciences, Poznan, Poland
| | - Anca Macovei
- Department of Biology and Biotechnology ‘Lazzaro Spallanzani’, University of Pavia, Pavia, Italy
| | - Alma Balestrazzi
- Department of Biology and Biotechnology ‘Lazzaro Spallanzani’, University of Pavia, Pavia, Italy
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Eggplant Germination is Promoted by Hydrogen Peroxide and Temperature in an Independent but Overlapping Manner. Molecules 2019; 24:molecules24234270. [PMID: 31771170 PMCID: PMC6930571 DOI: 10.3390/molecules24234270] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/12/2019] [Accepted: 11/21/2019] [Indexed: 12/27/2022] Open
Abstract
Hydrogen peroxide promotes seed germination, but the molecular mechanisms underlying this process are unclear. This study presents the results of eggplant (Solanum melongena) germination analyses conducted at two different temperatures and follows the effect of hydrogen peroxide treatment on seed germination and the seed proteome. Hydrogen peroxide was found to promote eggplant germination in a way not dissimilar to that of increased temperature stimuli. LC–MS profiling detected 729 protein families, 77 of which responded to a temperature increase or hydrogen peroxide treatment. These differentially abundant proteins were found to be involved in a number of processes, including protein and amino acid metabolism, carbohydrate metabolism, and the glyoxylate cycle. There was a very low overlap between hydrogen peroxide and temperature-responsive proteins, highlighting the differences behind the seemingly similar outcomes. Furthermore, the observed changes from the seed proteome indicate that hydrogen peroxide treatment diminished the seed endogenous hydrogen peroxide pool and that a part of manifested positive hydrogen peroxide effect might be related to altered sensitivity to abscisic acid.
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