Biopriming of rice seed with phosphobacteria for enhanced germination and vigour

Sivakumar, T.; Ambika, S.; Balakrishnan, K.

doi:10.5958/2249-5266.2017.00048.0

Cited by 5 publications

(3 citation statements)

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“…Biopriming has been shown to augment plant biomass (Sivakumar et al, 2017). The lack of significant influence from biopriming on plant dry matter in this study might be due to the plants being in a similar growth phase.…”

Section: Shoot and Root Dry Mattermentioning

confidence: 65%

Effect of Priming on Brassica rapa subsp. chinensis (Bok Choy) Seeds Germination

Phooi,

Azman,

Ismail

2023

agriTECH

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Brassica rapa subsp. Chinensis, commonly known as Bok Choy, is a nutrient-rich vegetable with substantial antioxidant content. Therefore, this study aimed to evaluate the effect of hydropriming and bio-nutri-priming using Sandwich compost leachate on seed germination, SPAD reading, and dry matter accumulation in 280 dwarf variants of Bok Choy seeds sourced from Green Eagle. The experimental process involved hydropriming with tap water, bio-nutri-priming using 0.2% Sandwich compost leachate, and a control group cultivated in soil without priming. A complete randomization design (CRD) with three replications assessed seed germination performance, SPAD, root and shoot dry matter, and root-to-shoot ratio. While there was no significant difference in the germination percentage (88.35±1.13%), the entire priming seeds exhibited a 2-day peak germination period, compared to 3 days for the non-priming counterparts. Bio-nutri-priming seeds showed faster median and mean germination times due to enhanced nutrient uptake. They further displayed high SPAD readings, suggesting a lack of toxic compounds. The dry matter production of all treated Bok Choy was similar because administered treatments did not interfere with plant growth and development. Therefore, applying bio-nutri-priming using Sandwich compost leachate positively affected seed germination performance, warranting its recommendation as a seeds priming solution.

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Section: Shoot and Root Dry Mattermentioning

confidence: 65%

Effect of Priming on Brassica rapa subsp. chinensis (Bok Choy) Seeds Germination

Phooi,

Azman,

Ismail

2023

agriTECH

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“…The application of ERCSA can induce resistance in rice plants, prevent disease by improving the activity of protective enzymes in seedlings, and has the benefits of being non-specialized, systemic, durable, and pollution-free. In addition, the coating agent protects pests by means of repelling rather than killing them, which can both protect biodiversity and protect rice from pests [29]. (3) The coating agent improves the quality of rice seedlings by increasing seed emergence rate, root activity, and enzyme activity in leaves.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Preparation of an Environmentally Friendly Rice Seed Coating Agent and Study of Its Mechanism of Action in Seedlings

Fang

Zeng

2023

Sustainability

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Traditional rice seed coating agents (TRSCA) contain toxic components that pollute the environment and threaten human health. The use of safe, high-efficiency, and environmentally friendly seed coating agents is vital for environmental protection. We studied the production of a new, environmentally friendly rice seed coating agent and its mechanism at the seedling stage. We assess the difference in mechanism of action between the new seed coating agent and the representative TRSCAs on the market through laboratory and field experiments. Following the application of the new seed coating agent, bakanae disease was controlled at a rate of over 80.5% and insect pest feeding was controlled at a rate of 81%. More importantly, the LC50 value was 10 times higher than following TRSCA treatment. The coating agent can enhance the activity of plant protective enzymes (peroxidase [POD], catalase [CAT], and superoxide dismutase [SOD]) and the activity of rice seedling roots. The coating agent is antibacterial, disease preventative, deworming, safe, and environmentally protective, and results in the production of strong seedlings, suggesting it would be a good alternative to TRSCA. Our analysis found that the control effect of the seed coating on rice seedling disease was likely achieved by activating the plant protection enzymes (e.g., POD, CAT, and SOD). The effect of the coating agent on rice is likely achieved through increased root activity and the improvement of the rhizosphere micro-ecological system.

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“…The method for biopriming of rice seeds was carried out using modified protocols described by Singh et al [27] and Sivakumar et al [35]. Briefly, unhealthy rice seeds (Grade B) were used for biopriming by soaking them in aqueous suspensions of the isolated bacteria showing excellent antifungal activity.…”

Section: Methodsmentioning

confidence: 99%

Herbicide-tolerant endophytic bacteria of rice plants as the biopriming agents for fertility recovery and disease suppression of unhealthy rice seeds

et al. 2019

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BackgroundDirty panicle disease (DPD) caused by several fungal phytopathogens results in damage and depreciation of rice seeds. Unhealthy rice seeds with DPD are potent reservoirs of pathogens and unable to be used as seed stock as they can spread the disease in the paddy fields leading to the severe loss of rice yield and quality. In this study, we aim to search for beneficial endophytes of commercially cultivated rice plants and utilize them as biostimulants in seed biopriming for fertility recovery and disease suppression of unhealthy rice seeds.ResultsForty-three bacterial endophytes were isolated from rice plants grown in the herbicide-treated paddy fields. Five isolates of these endophytes belonging to the genus Bacillus show excellent antifungal activity against fungal pathogens of DPD. Based on germination tests, biopriming unhealthy rice seeds by soaking in bacterial suspensions for 9 or 12 h was optimal as evidenced by the lowest disease incidence and longer shoot and root lengths of seedlings germinated, compared with controls made of non-treated or hydroprimed healthy and unhealthy seeds. Pot experiments were carried out to evaluate the impact of seed biopriming, in which the percentage of healthy rice yield produced by rice plants emerging from bioprimed seeds was not significantly different, compared to the controls originating respectively from non-treated healthy seeds and chemical fungicide-treated unhealthy seeds.ConclusionBiopriming of unhealthy rice seeds with herbicide-tolerant endophytic bacteria could recover seed fertility and protect the full life cycle of emerging rice plants from fungal pests. With our findings, seed biopriming is a straightforward approach that farmers can apply to recover unhealthy rice seed stock, which enables them to reduce the cost and use of agrochemicals in the commercial production of rice and to promote green technology in sustainable agriculture.

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Biopriming of rice seed with phosphobacteria for enhanced germination and vigour

Cited by 5 publications

References 0 publications

Effect of Priming on Brassica rapa subsp. chinensis (Bok Choy) Seeds Germination

Effect of Priming on Brassica rapa subsp. chinensis (Bok Choy) Seeds Germination

Preparation of an Environmentally Friendly Rice Seed Coating Agent and Study of Its Mechanism of Action in Seedlings

Herbicide-tolerant endophytic bacteria of rice plants as the biopriming agents for fertility recovery and disease suppression of unhealthy rice seeds

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