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Ciriello M, Campana E, Kyriacou MC, El-Nakhel C, Graziani G, Cardarelli M, Colla G, De Pascale S, Rouphael Y. Plant-derived biostimulant as priming agents enhanced antioxidant and nutritive properties in brassicaceous microgreens. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:5921-5929. [PMID: 38450779 DOI: 10.1002/jsfa.13416] [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: 10/09/2023] [Revised: 12/19/2023] [Accepted: 03/07/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND Microgreens constitute dietary sources of bioactive compounds imparting numerous health benefits and enhancing sensory experience. They can be successfully cultivated in soilless systems where biostimulants can be easily integrated as seed-priming and post-germination agents improving the sustainability of a crop's final production. Compared to an untreated control, three priming agents (a commercial legume-derived protein hydrolysate (A250), a novel protein hydrolysate derived from peanut biomass (H250) and hydropriming (H2O)) were applied to Komatsuna and Mibuna seeds grown as microgreens and compared for their effects on yield parameters, mineral composition, ABTS and FRAP antioxidant capacity, carotenoid concentration and phenolic compounds. RESULTS Significant effects of the main experimental factors and their interactions were identified on antioxidant capacity. Compared to the control and hydropriming, the highest ABTS and FRAP values were observed in Mibuna with the A250 and H250 treatments, respectively. Additionally, the H250 treatment increased the total concentrations of phenolic acid derivatives and flavonoid derivatives in Mibuna and Komatsuna, in tune with the levels of total flavonoids. Concerning mineral composition, the highest concentrations in both species were those of phosphorus and nitrate. CONCLUSION These results highlight the potential of select plant-based biostimulants as priming agents to enhance the antioxidant capacity, nutrient content and bioactive compound content, thus further increasing their functional and nutritive quality. In the light of this, the possibility of reducing the application of fertilizers by promoting a green transition for the intensive production of microgreens could subsequently be evaluated. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Michele Ciriello
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Emanuela Campana
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Marios C Kyriacou
- Department of Vegetable Crops, Agricultural Research Institute, Nicosia, Cyprus
| | - Christophe El-Nakhel
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Giulia Graziani
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | | | - Giuseppe Colla
- Department of Agriculture and Forest Sciences, University of Tuscia, Viterbo, Italy
| | - Stefania De Pascale
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Youssef Rouphael
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
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2
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Zulfiqar F, Moosa A, Ali HM, Bermejo NF, Munné-Bosch S. Biostimulants: A sufficiently effective tool for sustainable agriculture in the era of climate change? PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108699. [PMID: 38749375 DOI: 10.1016/j.plaphy.2024.108699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 04/16/2024] [Accepted: 05/01/2024] [Indexed: 05/26/2024]
Abstract
Climate change is currently considered as one of the main concerns of the agriculture sector, as it limits crop production and quality. Furthermore, the current context of global crisis with international political instability and war conflicts over the world is pushing the agriculture sector even more to urgently boost productivity and yield and doing so in a sustainable way in the current frame of climate change. Biostimulants can be an effective tool in alleviating the negative effects of environmental stresses to which plants are exposed, such as drought, salinity, heavy metals and extreme temperatures etc. Biostimulants act through multiple mechanisms, modifying gene expression, metabolism and phytohormone production, promoting the accumulation of compatible solutes and antioxidants and mitigating oxidative stress. However, it is important to keep in mind that the use and effect of biostimulants has limitations and must be accompanied by other techniques to ensure crop yield and quality in the current frame of climate change, such as proper crop management and the use of other sustainable resources. Here, we will not only highlight the potential use of biostimulants to face future agricultural challenges, but also take a critical look at their limitations, underlining the importance of a broad vision of sustainable agriculture in the context of climate change.
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Affiliation(s)
- Faisal Zulfiqar
- Department of Horticultural Sciences, Faculty of Agriculture and environment, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.
| | - Anam Moosa
- Department of Plant Pathology, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Hayssam M Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Núria F Bermejo
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain; Institute of Nutrition and Food Safety (INSA), University of Barcelona, Barcelona, Spain
| | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain; Institute of Nutrition and Food Safety (INSA), University of Barcelona, Barcelona, Spain
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3
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Virk P, Doan Q, Karim ME. Chronic physical conditions and suicidal ideation: a population-level analysis of Canadian school-attending young adults. J Ment Health 2024; 33:304-311. [PMID: 37724374 DOI: 10.1080/09638237.2023.2245904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 06/14/2023] [Accepted: 07/19/2023] [Indexed: 09/20/2023]
Abstract
BACKGROUND Students who identify with a chronic physical condition are a growing population and their conditions may be associated with poor mental well-being. AIM To compare suicidal ideation prevalence between Canadian school-attending young adults with and without a chronic physical condition. We hypothesized that students living with a chronic condition have a higher likelihood of experiencing suicidal ideation. METHODS A cross-sectional study was conducted using a nationally representative sample of 2297 Canadian school-attending young adults (ages 15-29 years) from the 2012-13 Canadian Community Health Survey-Mental Health (CCHS-MH). Survey-weighted logistic regression and sensitivity analyses were performed to estimate the likelihood of experiencing suicidal ideation between students with and without a chronic physical condition. RESULTS Approximately 14.3% (n = 329) students experienced suicidal ideation at some point. Students living with a physical chronic condition demonstrated 1.65 (95% CI: 1.14, 2.39) times higher odds of experiencing suicidal ideation, compared to students not living with a chronic physical condition. CONCLUSIONS Suicide prevention and health promotion are important considerations for campus health providers and administrators when planning services and accommodations for students living with chronic physical conditions.
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Affiliation(s)
- Punit Virk
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Quynh Doan
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- BC Children's Hospital Research Institute, Vancouver, British Columbia, Canada
- Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mohammad Ehsanul Karim
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Health Evaluation and Outcome Sciences, Providence Health Care, Vancouver, British Columbia, Canada
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4
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Wazeer H, Shridhar Gaonkar S, Doria E, Pagano A, Balestrazzi A, Macovei A. Plant-Based Biostimulants for Seeds in the Context of Circular Economy and Sustainability. PLANTS (BASEL, SWITZERLAND) 2024; 13:1004. [PMID: 38611532 PMCID: PMC11013454 DOI: 10.3390/plants13071004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/28/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024]
Abstract
Plant-based biostimulants (PBs), agents rich in bioactive compounds, are emerging as key players able to sustainably improve plant growth and crop productivity to address food security. PBs are generally applied as foliar spray or soil irrigation, while more recently, the application as seed priming treatments is being envisaged as a highly sustainable method to also improve seed quality and germination. Therefore, this review proposes to explore the use of PBs for the seeds industry, specifically discussing about the relevance of product market values, sustainable methods for their production, why and how PBs are used for seed priming, and pinpointing specific strengths and challenges. The collected research studies indicate that PBs applied to seeds result in improved germination, seedling growth, and stress tolerance, although the molecular mechanisms at work are still largely overlooked. The high variability of bioactive molecules and used sources point towards a huge reservoir of nature-based solutions in support of sustainable agriculture practices.
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Affiliation(s)
| | | | - Enrico Doria
- Department of Biology and Biotechnology ‘L. Spallanzani’, University of Pavia, Via Ferrata 9, 27100 Pavia, Italy; (H.W.); (S.S.G.); (A.P.); (A.B.)
| | | | | | - Anca Macovei
- Department of Biology and Biotechnology ‘L. Spallanzani’, University of Pavia, Via Ferrata 9, 27100 Pavia, Italy; (H.W.); (S.S.G.); (A.P.); (A.B.)
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Radwan AM, Ahmed EA, Donia AM, Mustafa AE, Balah MA. Priming of Citrullus lanatus var. Colocynthoides seeds in seaweed extract improved seed germination, plant growth and performance under salinity conditions. Sci Rep 2023; 13:11884. [PMID: 37482594 PMCID: PMC10363529 DOI: 10.1038/s41598-023-38711-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 07/13/2023] [Indexed: 07/25/2023] Open
Abstract
Citrullus lanatus var. Colocynthoide "Gurum" is an unconventional crop that can be utilized as a new source of edible oil and has the ability to grow in a variety of harsh conditions. To mitigate the adverse effects of salinity on seed germination and plant performance of C. lanatus, seeds were primed in the aqueous extracts of the seaweed Ulva lactuca before planting under greenhouse conditions. The aqueous extract of U. lactuca at 8% w/v led to maximal seed germination percentage and seedling growth of C. lanatus. Moreover, U. lactuca extract counteracted the negative effects of salt stress on the plant by significantly increasing the activity of SOD, CAT, and POD. The bioactive components of U. lactuca, e.g. glycine betaine and phenolic compounds can account for such beneficial role of algal extract on C. lanatus. Thus, priming of C. lanatus seeds in U. lactuca extract with various concentrations of U. lactuca extract can be employed as an effective practice for successful seed germination, improved plant growth and enhanced salt resistance, probably as a result of increased antioxidant enzymes activity and photosynthetic pigments.
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Affiliation(s)
- Asmaa M Radwan
- Botany and Microbiology Department, Faculty of Science, Girls Branch, Al-Azhar University, Cairo, Egypt
| | - Entesar A Ahmed
- Botany and Microbiology Department, Faculty of Science, Girls Branch, Al-Azhar University, Cairo, Egypt
| | - Abdelraheim M Donia
- Medicinal and Aromatic Plants Department, Desert Research Center, Cairo, Egypt
| | - Abeer E Mustafa
- Botany and Microbiology Department, Faculty of Science, Girls Branch, Al-Azhar University, Cairo, Egypt
| | - Mohamed A Balah
- Plants Protection Department, Desert Research Center, Cairo, Egypt.
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Kępczyński J, Kępczyńska E. Plant-Derived Smoke and Karrikin 1 in Seed Priming and Seed Biotechnology. PLANTS (BASEL, SWITZERLAND) 2023; 12:2378. [PMID: 37376003 DOI: 10.3390/plants12122378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/16/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023]
Abstract
Plant-derived smoke and smoke water (SW) can stimulate seed germination in numerous plants from fire-prone and fire-free areas, including cultivated plants and agricultural weeds. Smoke contains thousands of compounds; only several stimulants and inhibitors have been isolated from smoke. Among the six karrikins present in smoke, karrikin 1 (KAR1) seems to be key for the stimulating effect of smoke. The discovery and activity of highly diluted SW and KAR1 at extremely low concentrations (even at ca. 10-9 M) inducing seed germination of a wide array of horticultural and agricultural plants have created tremendous opportunities for the use of these factors in pre-sowing seed treatment through smoke- or KAR1-priming. This review presents examples of effects exerted by the two types of priming on seed germination and seedling emergence, growth, and development, as well as on the content of some compounds and enzyme activity. Seed biotechnology may involve both SW and KAR1. Some examples demonstrate that SW and/or KAR1 increased the efficiency of somatic embryogenesis, somatic embryo germination and conversion to plantlets. It is also possible to stimulate in vitro seed germination by SW, which allows to use in orchid propagation.
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Affiliation(s)
- Jan Kępczyński
- Institute of Biology, University of Szczecin, Waska 13, 71-415 Szczecin, Poland
| | - Ewa Kępczyńska
- Institute of Biology, University of Szczecin, Waska 13, 71-415 Szczecin, Poland
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Hu Y, Wang H, Zhou B, Li Z, Jia H, Deji P, Liu N, Wei J. Effects of cadmium stress on fruits germination and growth of two herbage species. Open Life Sci 2023; 18:20220544. [PMID: 37070076 PMCID: PMC10105554 DOI: 10.1515/biol-2022-0544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/18/2022] [Accepted: 11/30/2022] [Indexed: 04/19/2023] Open
Abstract
Cadmium (Cd) pollution is a global environmental problem. It is of great significance to find a kind of pasture that can grow normally in a cadmium environment, especially in the Tibetan Plateau. We studied the fruit germination and fruit growth of Elymus sinsubmuticus S.L. Chen and Elymus tangutorum (Nevski), native plants of the Tibetan Plateau, in different cadmium environments. The results showed that with increased cadmium stress, the fruit germination rate, final germination rate, fruit-vigor, average germination time, and germination-speed index for the two grass species gradually decreased, and the 50% germination time for the seed gradually increased. Root length, biomass, and the number of leaves decreased in both species. We quantified the fruit germination and growth of plants in the cadmium environment and found that E. sinosubmuticus S.L. Chen had better fruit germination and fruit growth, and it had the development potential of cadmium pollution control.
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Affiliation(s)
- Ying Hu
- College of Life Sciences, Qinghai Normal University, Xi’ning 810008, China
| | - Huichun Wang
- College of Life Sciences, Qinghai Normal University, Xi’ning 810008, China
- Key Lab. of Medicinal Animal and Plant Resources on the Qinghai–Tibet Plateau, Xi’ning 810008, China
- The south of Qilian Mountain Forest Ecosystem Observation and Research Station, Huzhu 810500, China
| | - Biyao Zhou
- College of Life Sciences, Qinghai Normal University, Xi’ning 810008, China
| | - Zhengke Li
- Qinghai Province Ecological Environment Monitoring Center, Xi’Ning 810007, China
| | - Huiping Jia
- College of Life Sciences, Qinghai Normal University, Xi’ning 810008, China
| | - Pengmao Deji
- College of Life Sciences, Qinghai Normal University, Xi’ning 810008, China
| | - Nian Liu
- College of Life Sciences, Qinghai Normal University, Xi’ning 810008, China
- Key Lab. of Medicinal Animal and Plant Resources on the Qinghai–Tibet Plateau, Xi’ning 810008, China
| | - Jingjing Wei
- College of Geographical Sciences, Qinghai Normal University, Xi’ning 810008, China
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Hatamipoor S, Shabani L, Farhadian S. Supportive effect of naringenin on NaCl-induced toxicity in Carthamus tinctorius seedlings. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 25:889-899. [PMID: 36062912 DOI: 10.1080/15226514.2022.2117790] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In the present study, we used exogenous naringenin (0.5 mM) pretreatment before the stress (25 mM NaCl) on the growth and tolerance of safflower seedlings under non-salinity conditions and salinity conditions. Our results showed that salinity treatment significantly declined the biomass, leaf relative water content, chlorophyll content, K+ content, and K+/Na+ ratio by 28%, 28%, 12%, 36%, and 56%, respectively, as compared to untreated control. The results obtained in the present study showed the beneficial effects of the pretreatment of naringenin in safflower seedlings under non-salinity conditions concerning increasing plant biomass, total phenolic compound, radical scavenging activity (RSA), soluble sugar content, proline, glutathione, enzymatic antioxidants, and K+ content. Nevertheless, naringenin pretreated plants showed a clear increment in the values of biomass, RSA, total phenolic compound, and catalase enzyme activity parameters under salinity stress. Salinity stress caused ionic phytotoxicity and oxidative stress by enhancing Na+ content, H2O2 accumulation, malondialdehyde (MDA), and antioxidants. However, naringenin alleviated salt-induced oxidative stress by decreasing H2O2 and MDA content in the leaves and improving the catalase activity in treated plants. Generally, it could be concluded pretreatment of naringenin before stress could partly diminish NaCl-caused oxidative stress in safflower seedlings, probably due to improvement in enzymatic and non-enzymatic antioxidants and reduced cell membrane damage.
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Affiliation(s)
- Shahab Hatamipoor
- Department of Plant Science, Faculty of Science, Shahrekord University, Shahrekord, Iran
| | - Leila Shabani
- Department of Plant Science, Faculty of Science, Shahrekord University, Shahrekord, Iran
- Research Institute of Biotechnology, Shahrekord University, Shahrekord, Iran
| | - Sadegh Farhadian
- Department of Biology, Faculty of Science, Shahrekord University, Shahrekord, Iran
- Central Laboratory, Shahrekord University, Shahrekord, Iran
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9
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Deolu-Ajayi AO, van der Meer IM, van der Werf A, Karlova R. The power of seaweeds as plant biostimulants to boost crop production under abiotic stress. PLANT, CELL & ENVIRONMENT 2022; 45:2537-2553. [PMID: 35815342 DOI: 10.1111/pce.14391] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 06/24/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Abiotic stresses like drought and salinity are major factors resulting in crop yield losses and soil degradation worldwide. To meet increasing food demands, we must improve crop productivity, especially under increasing abiotic stresses due to climate change. Recent studies suggest that seaweed-based biostimulants could be a solution to this problem. Here, we summarize the current findings of using these biostimulants and highlight current knowledge gaps. Seaweed extracts were shown to enhance nutrient uptake and improve growth performance in crops under stressed and normal conditions. Seaweed extracts contain several active compounds, for example, polysaccharides, polyphenols and phytohormones. Although some of these compounds have growth-promoting properties on plants, the molecular mechanisms that underly seaweed extract action remain understudied. In this paper, we review the role of these extracts and their bioactive compounds as plant biostimulants. The targeted application of seaweed extract to improve crop performance and protein accumulation is also discussed.
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Affiliation(s)
- Ayodeji O Deolu-Ajayi
- Agrosystems Research, Plant Sciences Group, Wageningen University and Research, Wageningen, The Netherlands
| | - Ingrid M van der Meer
- Bioscience, Plant Sciences Group, Wageningen University and Research, Wageningen, The Netherlands
| | - Adrie van der Werf
- Agrosystems Research, Plant Sciences Group, Wageningen University and Research, Wageningen, The Netherlands
| | - Rumyana Karlova
- Laboratory of Plant Physiology, Plant Sciences Group, Wageningen University and Research, Wageningen, The Netherlands
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Hosseini S, Shabani L, Sabzalian MR, Gharibi S. Foliar spray of commercial seaweed and amino acid-derived biostimulants promoted phytoremediation potential and salinity stress tolerance in halophytic grass, Puccinellia distans. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:415-429. [PMID: 35914280 DOI: 10.1080/15226514.2022.2088688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Plants pretreatment with various chemicals has often been used to diminish salinity stress impact on plants. An experiment was carried out to determine the effect of foliar spray of two commercially available biostimulants (Algabon® [0.5 g/l] and Bonamid® [2 g/l]) on the growth and tolerance of halophytic grass, Pucccinellia distans under non-salinity condition (NSC) and salinity condition (SC). The greenhouse experiment was set up in a completely randomized design with three treatments repeated three times. Our results showed that biomass, leaf relative water content, chlorophyll content, K+ content, K+/Na+ ratio, and protein and N contents were all negatively affected by 300 mM NaCl. The results obtained in the present study showed the beneficial effects of the pretreatments of two biostimulants on P. distans seedlings under non-salinity stress conditions with respect to increasing plant biomass, photosynthetic pigments, K+ content, the content of proteins, and nitrogen percentage. The results suggested that foliar spray of Bonamid® could partly diminish NaCl-caused stress on P. distans seedlings, probably due to higher accumulation of shoot biomass, photosynthetic pigments, K+/Na+ ratio, protein and N contents, phytoremediation potential, as well as upregulation of Na+/H+ antiporters located in plasma membranes and vacuoles. The highest phytoremediation potential (PP) of shoots and total biomass was detected in the plants sprayed with Bonamid® by 50.8 and 42.7% respectively, relative to that in salinity-stressed control plants. Interestingly, foliar spray with two biostimulants decreased osmoprotectants and antioxidant compounds content of shoots under salinity stress conditions. Collectively, it could be concluded that a noticeable feature of pretreatment of P. distans seedlings with Algabon® and Bonamid® is the increase in growth under NSC, whereas under SC only pretreated plants with amino acid-derived biostimulant (Bonamid®) can (partly) diminish the NaCl-induced deleterious effects in P. distans seedlings through the compartmentalization of salts in vacuoles (by upregulation of Na+/H+ antiporters).
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Affiliation(s)
- Saeed Hosseini
- Department of Plant Science, Faculty of Science, Shahrekord University, Shahrekord, Iran
| | - Leila Shabani
- Department of Plant Science, Faculty of Science, Shahrekord University, Shahrekord, Iran
- Research Institute of Biotechnology, Shahrekord University, Shahrekord, Iran
| | - Mohammad R Sabzalian
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Shima Gharibi
- Core Research Facilities (CRF), Isfahan University of Medical Sciences, Isfahan, Iran
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11
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Zhang M, Liu S, Tong S, Zhang D, Qi Q, Wang Y, Wang X, An Y, Lu X. Effects of Melatonin Priming on Suaeda corniculata Seed Germination, Antioxidant Defense, and Reserve Mobilization: Implications for Salinized Wetland Restoration. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.941032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Melatonin priming has been widely reported to positively affect seed germination under abiotic stresses. However, there is still a gap in knowledge on how melatonin priming impacts the seed germination and physiological change of wetland plant species. We assessed the effects of different melatonin concentrations on germination characteristics, antioxidant defense, and reserve mobilization of Suaeda corniculata seeds. Priming of S. corniculata seeds with 50 μM melatonin significantly improved the germination rate, germination speed, germination index, superoxide dismutase and peroxidase activity, and soluble sugar content as compared with the control, and effectively reduced the malondialdehyde content, promoted starch, soluble protein, and fat mobilization. However, the stress tolerance ability of S. corniculata seeds was reduced by high melatonin concentration. The structural equation model indicated that the melatonin priming directly affects the seed germination, while also indirectly regulating the antioxidant defense system and reserve mobilization. In conclusion, melatonin priming affects the S. corniculata seed germination under salinization stress in a concentration-dependent manner via both direct and indirect regulatory pathways. Insights into these aspects will advance our understanding of how melatonin priming affects S. corniculata seed germination and provide invaluable information and technical support for the restoration of salinized wetlands in the Momoge National Nature Reserve.
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12
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Lang T, Tang Y, Tam NFY, Gan K, Wu J, Wu W, Fu Y, Li M, Hu Z, Li F, Jiang M, Zhou H. Microcosm study on cold adaptation and recovery of an exotic mangrove plant, Laguncularia racemosa in China. MARINE ENVIRONMENTAL RESEARCH 2022; 176:105611. [PMID: 35344783 DOI: 10.1016/j.marenvres.2022.105611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/13/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Laguncularia racemosa (a white mangrove) is an exotic mangrove species commonly distributed in southern intertidal zones in China since it was introduced for reforestation purposes in 1999. However, the invasiveness of this exotic species and its cold adaptability have rarely been reported. The present work determined the cold resistance level of L. racemosa and its recovery from cold stress, aiming to speculate its potential invasive capability in China. Results showed that the germination of L. racemosa seeds in sand or in simulated sea field models was significantly inhibited by a series of cold treatments, with no germination at 5 °C and decreased in germination at low temperatures (15-25 °C). Low temperature also reduced net photosynthetic rate (A), water use efficiency (WUE), transpiration rate (E), and stomatal conductance (Gs) of the seedlings of L. racemosa. On the other hand, cold stress up-regulated in leaves of malondialdehyde (MDA) and antioxidant activities, including superoxide dismutase (SOD), glutathione reductase (GR), and ascorbate peroxidase (APX). Additionally, these physiological and biochemical indexes of cold-stressed L. racemosa could recover to the original levels if the plants were returned to room temperature with a few exceptions. For instance, the cold exposure duration altered seedlings' physiology, but the photosynthetic related activities could not recover if cold treatment lasted for 120 h. This study suggests that L. racemosa can tolerate low temperatures to some extent, thus settle and even invade the coast of China at high latitudes having cold winter, which poses a challenge to the conservation and management of local mangrove ecosystems.
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Affiliation(s)
- Tao Lang
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China
| | - Yexun Tang
- Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China; College of Fisheries, Jimei University, 361021, Xiamen, China
| | - Nora Fung-Yee Tam
- Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China; Department of Science, School of Science and Technology, Hong Kong Metropolitan University, Ho Man Tin, Kowloon, 999077, Hong Kong, China
| | - Keying Gan
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China
| | - Jinsong Wu
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China
| | - Wenquan Wu
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China
| | - Yijian Fu
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China
| | - Mingdang Li
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China
| | - Fenglan Li
- Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China; Department of Science, School of Science and Technology, Hong Kong Metropolitan University, Ho Man Tin, Kowloon, 999077, Hong Kong, China
| | - Mingguo Jiang
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, 530008, China
| | - Haichao Zhou
- Shenzhen Key Laboratory of Marine Bio-resource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, 518071, Shenzhen, China; Greater Bay Area Mangrove Wetland Research & Development Centre, Guangdong Neilingding Futian National Nature Reserve, 518040, Shenzhen, China.
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Bojović B, Kanjevac M, Todorović M, Jakovljević D. Evaluation of seed priming on germination and growth of basil (Ocimum basilicum L. cv. 'Genovese'). KRAGUJEVAC JOURNAL OF SCIENCE 2022. [DOI: 10.5937/kgjsci2244189b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The priming method is a technique that can greatly improve seed performance and provide high-quality seeds for successful production. In this study, the effect of hormopriming (GA3 and IAA), halopriming (MgSO4 and KNO3), osmopriming (AA, H2O2) and hydropriming (H2O) on the germination, as well as initial stages of growth and development of basil (Ocimum basilicum L. cv. 'Genovese') were investigated. The application of different priming methods not only improved the germination performances of basil, but also significantly influenced the growth of seedlings (root length, shoot length, fresh mass, and vigor index) with the best results achieved by priming with GA3 and H2O2. In addition, it has been found that the concentration of photosynthetic pigments and soluble protein content can be improved by the appropriate priming treatment. The most favorable effect on the examined parameters was achieved during treatment with H2O2.
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Chaudhry S, Sidhu GPS. Climate change regulated abiotic stress mechanisms in plants: a comprehensive review. PLANT CELL REPORTS 2022; 41:1-31. [PMID: 34351488 DOI: 10.1007/s00299-021-02759-5] [Citation(s) in RCA: 104] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/18/2021] [Indexed: 05/20/2023]
Abstract
Global climate change is identified as a major threat to survival of natural ecosystems. Climate change is a dynamic, multifaceted system of alterations in environmental conditions that affect abiotic and biotic components of the world. It results in alteration in environmental conditions such as heat waves, intensity of rainfall, CO2 concentration and temperature that lead to rise in new pests, weeds and pathogens. Climate change is one of the major constraints limiting plant growth and development worldwide. It impairs growth, disturbs photosynthesis, and reduces physiological responses in plants. The variations in global climate have gained the attention of researchers worldwide, as these changes negatively affect the agriculture by reducing crop productivity and food security. With this background, this review focuses on the effects of elevated atmospheric CO2 concentration, temperature, drought and salinity on the morphology, physiology and biochemistry of plants. Furthermore, this paper outlines an overview on the reactive oxygen species (ROS) production and their impact on the biochemical and molecular status of plants with increased climatic variations. Also additionally, different tolerance strategies adopted by plants to combat environmental adversities have been discussed.
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Affiliation(s)
- Smita Chaudhry
- Institute of Environmental Studies, Kurukshetra University, Kurukshetra, Haryana, 136119, India
- Centre for Applied Biology in Environment Sciences, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Gagan Preet Singh Sidhu
- Centre for Applied Biology in Environment Sciences, Kurukshetra University, Kurukshetra, Haryana, 136119, India.
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Brown VS, Erickson TE, Merritt DJ, Madsen MD, Hobbs RJ, Ritchie AL. A global review of seed enhancement technology use to inform improved applications in restoration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 798:149096. [PMID: 34340083 DOI: 10.1016/j.scitotenv.2021.149096] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/01/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Seed-based restoration often experiences poor success due to a range of edaphic and biotic issues. Seed enhancement technologies (SETs) are a novel approach that can alleviate these pressures and improve restoration success. Broadly, SETs have been reviewed for agricultural and horticultural purposes, for specific types of SETs such as coating or priming, or for focal ecosystems. However, information is lacking for SETs within a restoration focused context, and how they are being used to alleviate certain barriers. This review aimed to synthesise the current literature on SETs to understand what SETs are being tested, in which sectors and locations they are being tested, what issues are faced within restoration using SETs, and how SETs are being used to approach these issues. Priming was highlighted as the main SET investigated. Inoculation, pesticide application and magnetic fields were also commonly tested (SETs we termed 'prospective techniques'). SET research mainly occurred in the agricultural sector. More recently, other sectors, such as restoration and rangeland management, have increased efforts into SET research. The restoration sector has focused on extruded pelleting and coating (with activated carbon), in combination with herbicide application, to overcome invasive species, and coating with certain additives to alleviate edaphic issues. Other sectors outside restoration were largely focused on evaluating priming for overcoming these barriers. The majority of priming research has been completed on crop species and differences between these species and ecosystems must be considered in future restoration efforts that focus on native seed use. Generally, SETs require further refinement, including identifying ideal additives and their optimum concentrations to target certain issues, refining formulations for coating and extruded pelleting and developing flash flaming. A bet-hedging approach using multiple SETs and/or combinations of SETs may be advantageous in overcoming a wide range of barriers in seed-based restoration.
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Affiliation(s)
- Vanessa S Brown
- School of Biological Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia 6009, Australia; Kings Park Science, Department of Biodiversity Conservation and Attractions, 2 Kattidj Close, Kings Park, Western Australia, 6005, Australia.
| | - Todd E Erickson
- School of Biological Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia 6009, Australia; Kings Park Science, Department of Biodiversity Conservation and Attractions, 2 Kattidj Close, Kings Park, Western Australia, 6005, Australia
| | - David J Merritt
- School of Biological Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia 6009, Australia; Kings Park Science, Department of Biodiversity Conservation and Attractions, 2 Kattidj Close, Kings Park, Western Australia, 6005, Australia
| | - Matthew D Madsen
- Department of Plant and Wildlife Sciences, Brigham Young University, 701 East University Parkway, Provo, UT 84602, United States of America
| | - Richard J Hobbs
- School of Biological Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia 6009, Australia
| | - Alison L Ritchie
- School of Biological Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, Western Australia 6009, Australia; Kings Park Science, Department of Biodiversity Conservation and Attractions, 2 Kattidj Close, Kings Park, Western Australia, 6005, Australia
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El Boukhari MEM, Barakate M, Choumani N, Bouhia Y, Lyamlouli K. Ulva lactuca Extract and Fractions as Seed Priming Agents Mitigate Salinity Stress in Tomato Seedlings. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10061104. [PMID: 34070914 PMCID: PMC8230233 DOI: 10.3390/plants10061104] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 05/02/2023]
Abstract
The present study investigates the effect of Ulva lactuca extract as seed-priming agent for tomato plants under optimal and salinity stress conditions. The aims of this experiment were to assess the effect of seed priming using Ulva lactuca extract in alleviating the salinity stress tomato plants were subjected to, and to find out the possible mechanism of actions behind such a positive effect via means of fractionation of the crude extract and characterization. Salinity application decreased the plant biomass and altered different physiological traits of tomato. However, the application of Ulva lactuca methanol extract (ME) and its fractions (residual fraction (RF), chloroform fraction (CF), butanol fraction (BF), and hexane fraction (HF)) at 1 mg·mL-1 as seed priming substances attenuated the negative effects of salinity on tomato seedlings. Under salinity stress conditions, RF application increased the tomato fresh weight; while ME, RF, and HF treatments significantly decreased the hydrogen peroxide (H2O2) concentration and antioxidant activity in tomato plants. The biochemical analyses of Ulva lactuca extract and fractions showed that the RF recorded the highest concentration of glycine betaine, while the ME was the part with the highest concentrations of total phenols and soluble sugars. This suggests that these compounds might play a key role in the mechanism by which seaweed extracts mitigate salinity stress on plants.
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Affiliation(s)
- Mohammed El Mehdi El Boukhari
- Biodiversity and Plant Sciences Program, Mohammed 6 Polytechnic University (UM6P), AgroBioScience, Benguerir 43150, Morocco; (M.E.M.E.B.); (M.B.); (Y.B.)
- Laboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Mustapha Barakate
- Biodiversity and Plant Sciences Program, Mohammed 6 Polytechnic University (UM6P), AgroBioScience, Benguerir 43150, Morocco; (M.E.M.E.B.); (M.B.); (Y.B.)
- Laboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Nadia Choumani
- Department of Chemical and Biochemical Sciences-Green Process Engineering (CBS-GPE), Mohammed VI Polytechnic University (UM6P), Benguerir 43150, Morocco;
| | - Youness Bouhia
- Biodiversity and Plant Sciences Program, Mohammed 6 Polytechnic University (UM6P), AgroBioScience, Benguerir 43150, Morocco; (M.E.M.E.B.); (M.B.); (Y.B.)
- Laboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, Morocco
| | - Karim Lyamlouli
- Biodiversity and Plant Sciences Program, Mohammed 6 Polytechnic University (UM6P), AgroBioScience, Benguerir 43150, Morocco; (M.E.M.E.B.); (M.B.); (Y.B.)
- Correspondence:
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Srivastava AK, Suresh Kumar J, Suprasanna P. Seed 'primeomics': plants memorize their germination under stress. Biol Rev Camb Philos Soc 2021; 96:1723-1743. [PMID: 33961327 DOI: 10.1111/brv.12722] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/28/2022]
Abstract
Seed priming is a pre-germination treatment administered through various chemical, physical and biological agents, which induce mild stress during the early phases of germination. Priming facilitates synchronized seed germination, better seedling establishment, improved plant growth and enhanced yield, especially in stressful environments. In parallel, the phenomenon of 'stress memory' in which exposure to a sub-lethal stress leads to better responses to future or recurring lethal stresses has gained widespread attention in recent years. The versatility and realistic yield gains associated with seed priming and its connection with stress memory make a critical examination useful for the design of robust approaches for maximizing future yield gains. Herein, a literature review identified selenium, salicylic acid, poly-ethylene glycol, CaCl2 and thiourea as the seed priming agents (SPRs) for which the most studies have been carried out. The average priming duration for SPRs generally ranged from 2 to 48 h, i.e. during phase I/II of germination. The major signalling events for regulating early seed germination, including the DOG1 (delay of germination 1)-abscisic acid (ABA)-heme regulatory module, ABA-gibberellic acid antagonism and nucleus-organelle communication are detailed. We propose that both seed priming and stress memory invoke a 'bet-hedging' strategy in plants, wherein their growth under optimal conditions is compromised in exchange for better growth under stressful conditions. The molecular basis of stress memory is explained at the level of chromatin reorganization, alternative transcript splicing, metabolite accumulation and autophagy. This provides a useful framework to study similar mechanisms operating during seed priming. In addition, we highlight the potential for merging findings on seed priming with those of stress memory, with the dual benefit of advancing fundamental research and boosting crop productivity. Finally, a roadmap for future work, entailing identification of SPR-responsive varieties and the development of dual/multiple-benefit SPRs, is proposed for enhancing SPR-mediated agricultural productivity worldwide.
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Affiliation(s)
- Ashish Kumar Srivastava
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.,Homi Bhabha National Institute, Mumbai, 400094, India
| | - Jisha Suresh Kumar
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Penna Suprasanna
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
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18
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African Leafy Vegetables for Improved Human Nutrition and Food System Resilience in Southern Africa: A Scoping Review. SUSTAINABILITY 2021. [DOI: 10.3390/su13052896] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The economic potential of African leafy vegetables (ALVs) remains obscured by a poorly developed value chain. This scoping review assembled and examined scattered knowledge generated on ALVs across southern Africa, focusing on production, processing, marketing, and consumption. Two electronic databases (Scopus and Web of Science) were screened, and a total of 71 relevant studies were included and evaluated. The review provides a state of the art on knowledge related to utilisation of ALVs across the entire value chain. The findings show that functional properties are of prime importance in the production and consumption of ALVs. However, the lack of improved germplasm and a non-existent seed supply system are significant production bottlenecks. Pests and diseases affecting the productivity of ALVs remain mostly unexplored. Sun-drying and boiling were the most reported post-harvest processing methods, suggesting that traditional processing methods are still prominent. Many studies also confirmed the predominance of informal markets in the trading of ALVs as they fail to penetrate formal markets because of poor product positioning and exclusion from produce demand and supply forecasts. The inception of cultivar development, mechanised processing methods, and market linkages will enhance the profitability of ALVs in the region. This review enhances the gaining of insight into the state of different value chain components will assist in upscaling production, value addition of products, and enhance marketing efficiency. There is a great opportunity for basic and applied research into ALVs.
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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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Hazrati S, Farahbakhsh M, Heydarpoor G, Besalatpour AA. Mitigation in availability and toxicity of multi-metal contaminated soil by combining soil washing and organic amendments stabilization. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110807. [PMID: 32505762 DOI: 10.1016/j.ecoenv.2020.110807] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/16/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
In order to investigate the decrease in total metal contents and to mitigate the availability and toxicity of metals from farmland near a lead mining area, a combination of two effective soil washing and eco-friendly stabilization technologies was applied in current research. The pre-treatment was performed with three types of agents including Ethylenediaminetetraacetic acid (EDTA), citric acid (CA), and mixture of hydroxylamine hydrochloride and citric acid (HA)) and the post-treatment stabilization was adopted using four rich-carbon organic waste amendments (cow manure compost (CMC), vermicompost (VC), urban sewage sludge (SS), and sludge-derived biochar (BIO)). Furthermore, the fate of residual metals (leachability, plant-availability, bioaccessibility, and chemical distribution), soil quality indicators (phytotoxicity and enzyme activities), and some soil physicochemical properties were examined before and after the two-steps remediation. The soil washing, especially using HA and CA agents, dramatically increased the labile metals and negatively changed the soil microbial activity. The two-month stabilization with SS, BIO, and VC resulted in a significant control of the leachability and plant-availability of residual Zn and Pb. However, the post-treatment was only slightly immobilized of Cd. The amendments affected the restoration of soil pH and organic carbon as well as the improvement of available nutrients. Compared to the other amendments that caused restrictions, the SS significantly restored the enzyme activities. With the exception of CMC, the SS, VC, and BIO, indicated higher germination rate and growth of wheat were also obtained. This study reveal the ability of the complementary role of stabilization with soil washing to reduce metal toxicity and confirm the usefulness of municipal and animal wastes in enhancing soil and environmental qualities.
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Affiliation(s)
- Sajjad Hazrati
- Department of Soil Science, Faculty of Agricultural Engineering and Technology, University of Tehran, Iran.
| | - Mohsen Farahbakhsh
- Department of Soil Science, Faculty of Agricultural Engineering and Technology, University of Tehran, Iran.
| | - Ghasem Heydarpoor
- Department of Reclamation of Arid and Mountainous Regions, Faculty of Natural Resources, University of Tehran, Iran
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21
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Goro MG, Sinha VB. Seed germination responses for varying KNO3 and NaNO3 stress in Trifolium alexandrinum. L cultivars. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems. PLANTS 2020; 9:plants9030359. [PMID: 32178418 PMCID: PMC7154814 DOI: 10.3390/plants9030359] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 12/31/2022]
Abstract
The time when plant biostimulants were considered as "snake oil" is erstwhile and the skepticism regarding their agricultural benefits has significantly faded, as solid scientific evidences of their positive effects are continuously provided. Currently plant biostimulants are considered as a full-fledged class of agri-inputs and highly attractive business opportunity for major actors of the agroindustry. As the dominant category of the biostimulant segment, seaweed extracts were key in this growing renown. They are widely known as substances with the function of mitigating abiotic stress and enhancing plant productivity. Seaweed extracts are derived from the extraction of several macroalgae species, which depending on the extraction methodology lead to the production of complex mixtures of biologically active compounds. Consequently, plant responses are often inconsistent, and precisely deciphering the involved mechanism of action remains highly intricate. Recently, scientists all over the world have been interested to exploring hidden mechanism of action of these resources through the employment of multidisciplinary and high-throughput approaches, combining plant physiology, molecular biology, agronomy, and multi-omics techniques. The aim of this review is to provide fresh insights into the concept of seaweed extract (SE), through addressing the subject in newfangled standpoints based on current scientific knowledge, and taking into consideration both academic and industrial claims in concomitance with market's requirements. The crucial extraction process as well as the effect of such products on nutrient uptake and their role in abiotic and biotic stress tolerance are scrutinized with emphasizing the involved mechanisms at the metabolic and genetic level. Additionally, some often overlooked and indirect effects of seaweed extracts, such as their influence on plant microbiome are discussed. Finally, the plausible impact of the recently approved plant biostimulant regulation on seaweed extract industry is addressed.
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Campobenedetto C, Grange E, Mannino G, van Arkel J, Beekwilder J, Karlova R, Garabello C, Contartese V, Bertea CM. A Biostimulant Seed Treatment Improved Heat Stress Tolerance During Cucumber Seed Germination by Acting on the Antioxidant System and Glyoxylate Cycle. FRONTIERS IN PLANT SCIENCE 2020; 11:836. [PMID: 32625226 PMCID: PMC7311796 DOI: 10.3389/fpls.2020.00836] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/25/2020] [Indexed: 05/14/2023]
Abstract
Seed enhancement technologies have the potential to improve germination and seedling growth under environmental stress. The effects of KIEM®, an innovative biostimulant based on lignin derivatives and containing plant-derived amino acids and molybdenum, were investigated on cucumber (Cucumis sativus L.) seed germination. To determine the metabolic targets of this product, biometric, transcriptional and biochemical analyses were carried out on both non-treated and KIEM®-treated seeds incubated for 24 and 48 h under standard (28°C) and heat stress (35°C) conditions. The application of the biostimulant as a seed treatment increased the percent germination (+6.54%) and fresh biomass (+13%) at 48 h, and decreased the content of H2O2 in treated seeds at 28°C (-70%) and at 35°C (-80%). These changes in biometric and biochemical properties were accompanied by changes in expression levels of the genes coding for ROS-producing (RBOH) and scavenging (SOD, CAT, GST) enzymes and their specific activity. In general, the treatment with KIEM® in heat-stress condition appeared to stimulate a higher accumulation of three scavenger gene transcripts: CuZnSOD (+1.78), MnSOD (+1.75), and CAT (+3.39), while the FeSOD isoform was dramatically downregulated (0.24). Moreover, the amount of non-protein thiols, important antioxidant molecules, was increased by the biostimulant after 48 h (+20%). Taken together these results suggest that KIEM® acts through mitigation of the effects of the oxidative stress. Moreover, after 48 h, the pre-sowing treatment with KIEM® increased the transcription levels (+1.5) and the activity of isocitrate lyase (+37%), a key enzyme of the glyoxylate cycle, suggesting a potential effect of this product in speeding up the germination process. Finally, the chemical characterization of KIEM® identified five essential and three non-essential amino acids, and others bioactive compounds, including five organic and inorganic acids that might be potentially involved in its activity. Based on these data, insights on the potential mechanism of action of the biostimulant, suggested that there are broader applications as a product able to increase seed tolerance to different abiotic stress typical of adverse environmental conditions.
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Affiliation(s)
- Cristina Campobenedetto
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- Green Has Italia S.p.A, Canale, Italy
| | - Eric Grange
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Giuseppe Mannino
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Jeroen van Arkel
- BU Bioscience, Wageningen University & Research, Wageningen, Netherlands
| | - Jules Beekwilder
- BU Bioscience, Wageningen University & Research, Wageningen, Netherlands
| | - Rumyana Karlova
- Laboratory of Plant Physiology, Plant Sciences Group, Wageningen University & Research, Wageningen, Netherlands
| | | | | | - Cinzia M. Bertea
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
- *Correspondence: Cinzia M. Bertea,
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Bulgari R, Trivellini A, Ferrante A. Effects of Two Doses of Organic Extract-Based Biostimulant on Greenhouse Lettuce Grown Under Increasing NaCl Concentrations. FRONTIERS IN PLANT SCIENCE 2019; 9:1870. [PMID: 30666260 PMCID: PMC6330896 DOI: 10.3389/fpls.2018.01870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 12/04/2018] [Indexed: 05/13/2023]
Abstract
The enhancement of plant tolerance toward abiotic stresses is increasingly being supported by the application of biostimulants. Salinity represents a serious problem in the Mediterranean region. To verify the effects deriving from the application of biostimulants, trials on Romaine lettuce plants under salt exposure were performed, in greenhouse. Plants were subjected to three NaCl solutions with 0.8, 1.3, and 1.8 dS/m of electrical conductivity. The volume of the solution was 200 mL/plant and delivered every 3 days. Biostimulant treatments started after crop establishment and were: control (water) and two doses (0.1 or 0.2 mL/plant) of the commercial biostimulant Retrosal® (Valagro S.p.A), containing calcium, zinc, and specific active ingredients. Four Retrosal® treatments were applied, every 7 days, directly to the substrate. Non-destructive analyses were conducted to assess the effects on leaf photosynthetic efficiency. At harvest, plants fresh weight (FW) and dry weight were determined, as well as the concentration of chlorophylls, carotenoids, total sugars, nitrate, proline, and abscisic acid (ABA). The biostimulant tested increased significantly the FW of lettuce (+65% in the highest dose) compared to controls. Results indicate that treatments positively affected the chlorophyll content measured in vivo (+45% in the highest dose) and that a general positive effect was observable on net photosynthesis rate. Retrosal® seems to improve the gas exchanges under our experimental conditions. The total sugars levels were not affected by treatments. Biostimulant allowed maintaining nitrate concentration similar to the untreated and unstressed controls. The increasing levels of water salinity caused a raise in proline concentration in control plants (+85%); biostimulant treatments at 0.2 mL/plant dose kept lower the proline levels. All plants treated with the biostimulant showed lower value of ABA (-34%) compared to controls. Results revealed that Retrosal® is able to stimulate plant growth independently from the salinity exposure. However, treated plants reached faster the commercial maturity stage. The fresh biomass of control at the end of experiment, after 30 days, ranged from 15 to 42 g/head, while in biostimulant treated plants ranged from 45 to 94 g/head. The product applied at maximum dose seems to be the most effective in our experimental conditions.
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Affiliation(s)
- Roberta Bulgari
- Department of Agricultural and Environmental Sciences – Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - Alice Trivellini
- Institute of Life Sciences, Scuola Superiore Sant’Anna Pisa, Pisa, Italy
| | - Antonio Ferrante
- Department of Agricultural and Environmental Sciences – Production, Landscape, Agroenergy, University of Milan, Milan, Italy
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Abdel Latef AAH, Srivastava AK, Saber H, Alwaleed EA, Tran LSP. Sargassum muticum and Jania rubens regulate amino acid metabolism to improve growth and alleviate salinity in chickpea. Sci Rep 2017. [PMID: 28874670 DOI: 10.1007/s00344-018-9906-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
The present study evaluates the potential of Sar gassum muticum (Sar) and Jan ia rubens (Jan) seaweeds for enhancing growth and mitigating soil-salinity in chickpea (Cicer arietinum L.). Under control conditions, Sar and Jan extracts improved chickpea growth which was attributed to their potential for increasing photosynthetic pigments, K+ and amino acids, particularly proline, in comparison with water-sprayed control. Upon stress imposition, chickpea growth was reduced in NaCl concentration-dependent manner, and principal component analysis (PCA) revealed Na+ accumulation and oxidative damage as major determinants of sensitivity at high salinity. Furthermore, amino acid quantification indicated activation/deactivation of overall metabolism in roots/shoots, as an adaptive strategy, for maintaining plant growth under salt stress. Sar and Jan extract supplementations provided stress amelioration, and PCA confirmed that improved growth parameters at high salinity were associated with enhanced activities of superoxide dismutase and peroxidase. Besides, four key amino acids, including serine, threonine, proline and aspartic acids, were identified from roots which maximally contribute to Sar- and Jan-mediated stress amelioration. Sar showed higher effectiveness than Jan under both control and salt stress conditions. Our findings highlight "bio-stimulant" properties of two seaweeds and provide mechanistic insight into their salt-ameliorating action which is relevant for both basic and applied research.
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Affiliation(s)
- Arafat Abdel Hamed Abdel Latef
- Botany Department, Faculty of Science, South Valley University, 83523, Qena, Egypt.
- Biology Department, College of Applied Medical Science, Turabah Branch 21955, Taif University, Taif, Saudi Arabia.
| | - Ashish Kumar Srivastava
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Hani Saber
- Botany Department, Faculty of Science, South Valley University, 83523, Qena, Egypt
| | - Eman A Alwaleed
- Botany Department, Faculty of Science, South Valley University, 83523, Qena, Egypt
| | - Lam-Son Phan Tran
- Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, Vietnam.
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, 230-0045, Japan.
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