Chitosans of different molecular weight enhance potato (Solanum tuberosum L.) yield in a field trial

Falcón-Rodríguez, Alejandro; Costales, Daimy; González-Peña, Dianevys; Morales, D.; Mederos, Yuliem; Jeréz, E; Cabrera, Juan Carlos

doi:10.5424/sjar/2017151-9288

Cited by 19 publications

(9 citation statements)

References 15 publications

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“…Although the use of chitosan sounds promising in improving plant performance, it highly depends on its concentration and time of application. Previous studies showed that lower concentrations of chitosan increase the productivity of potato and vice versa (Falcón-Rodríguez et al 2017). The same trend was reported by (Abdel-Mawgoud, 2010) in strawberries.…”

Section: Introductionsupporting

confidence: 81%

IMPACTS OF DIFFERENT CONCENTRATIONS AND TIMES OF APPLICATION OF CHITOSAN ON SWEET BASIL (Ocimum basilicum L.)

Zubair

Nakasha²,

Sinniah³

et al. 2021

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Sweet basil is one of the popular herbs that contains various types of antioxidants and is widely used in pharmaceutical, food and cosmetic industries. Although sweet basil is considered as an easy and fast-growing herb, yet, the production is still insufficient to cater to the rising demand. Thus, the aim of this study is to increase biomass of sweet basil by the application of chitosan at different timing. The experiment was arranged in Randomized Complete Block Design with four replications. Plants were treated with different concentrations of chitosan (0, 2, 4 and 6 ml/L) at three different times of application (20, 40 and 20+40 days after transplanting), and kept for 60 days under open field. Data was analysed by using Statistical Analysis Software (version 9.4), Analysis of Variance was used and means were separated using Least Significant Differences. Based on the findings, all treated plants showed greater value compared to the control treatment. Among the treatments, it was found that plants treated with 4 ml/L at 20 days after transplanting performed the best where the plants reached highest stem fresh weight (44.59 g/plant), root dry weight (2.83 g/plant), leaf fresh weight (54.28 g/plant) and leaf dry weight (8.80 g/plant). The yield was higher than control treatment at 43.45% and 59.71% based on its leaf fresh weight and leaf dry weight, respectively. Therefore, it is recommended for sweet basil to be treated with 4 ml/L at 20 days after transplanting. Besides, more details study on compound profiling and its fraction from sweet basil leaf extract can be conducted in the future.

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Section: Introductionsupporting

confidence: 81%

IMPACTS OF DIFFERENT CONCENTRATIONS AND TIMES OF APPLICATION OF CHITOSAN ON SWEET BASIL (Ocimum basilicum L.)

Zubair

Nakasha²,

Sinniah³

et al. 2021

KnowEx

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“…As this protein expression was observed 24 h after chitosan treatment, these findings are in agreement with our observations of an upregulation of the corresponding genes in the first hours after chitosan treatment. Additionally, field trials with chitosan-treated potato plants resulted in up to 30% enhanced potato yields ( Falcón-Rodríguez et al., 2017 ). Equally, foliar application of chitosan enhanced both growth and drought tolerance of potato plants ( Muley et al., 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Transcriptome Analysis of Solanum Tuberosum Genotype RH89-039-16 in Response to Chitosan

2020

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Potato ( Solanum tuberosum L.) is the worldwide most important nongrain crop after wheat, rice, and maize. The autotetraploidy of the modern commercial potato makes breeding of new resistant and high-yielding cultivars challenging due to complicated and time-consuming identification and selection processes of desired crop features. On the other hand, plant protection of existing cultivars using conventional synthetic pesticides is increasingly restricted due to safety issues for both consumers and the environment. Chitosan is known to display antimicrobial activity against a broad range of plant pathogens and shows the ability to trigger resistance in plants by elicitation of defense responses. As chitosan is a renewable, biodegradable and nontoxic compound, it is considered as a promising next-generation plant-protecting agent. However, the molecular and cellular modes of action of chitosan treatment are not yet understood. In this study, transcriptional changes in chitosan-treated potato leaves were investigated via RNA sequencing. Leaves treated with a well-defined chitosan polymer at low concentration were harvested 2 and 5 h after treatment and their expression profile was compared against water-treated control plants. We observed 32 differentially expressed genes (fold change ≥ 1; p-value ≤ 0.05) 2 h after treatment and 83 differentially expressed genes 5 h after treatment. Enrichment analysis mainly revealed gene modulation associated with electron transfer chains in chloroplasts and mitochondria, accompanied by the upregulation of only a very limited number of genes directly related to defense. As chitosan positively influences plant growth, yield, and resistance, we conclude that activation of electron transfer might result in the crosstalk of different organelles via redox signals to activate immune responses in preparation for pathogen attack, concomitantly resulting in a generally improved metabolic state, fostering plant growth and development. This conclusion is supported by the rapid and transient production of reactive oxygen species in a typical oxidative burst in the potato leaves upon chitosan treatment. This study furthers our knowledge on the mode of action of chitosan as a plant-protecting agent, as a prerequisite for improving its ability to replace or reduce the use of less environmentally friendly agro-chemicals.

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“…In vivo [60] Increased plant growth and yield In vitro and in vivo [61] Tomato (Solanum lycopersicum)…”

Section: Increased Of Tuber Sizementioning

confidence: 99%

Mechanism of Plant Growth Promotion and Disease Suppression by Chitosan Biopolymer

et al. 2020

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The chitosan (CHT) biopolymer is a de-acetylated chitin derivative that exists in the outer shell of shrimp, shellfish, lobster or crabs, as well as fungal cell walls. Because of its biodegradability, environmental non-toxicity, and biocompatibility, it is an ideal resource for sustainable agriculture. The CHT emerged as a promising agent used as a plant growth promoter and also as an antimicrobial agent. It induces plant growth by influencing plant physiological processes like nutrient uptake, cell division, cell elongation, enzymatic activation and synthesis of protein that can eventually lead to increased yield. It also acts as a catalyst to inhibit the growth of plant pathogens, and alter plant defense responses by triggering multiple useful metabolic pathways. This review emphasizes the role and mechanisms of CHT as a plant growth promoter and disease suppressor, and its future implications in agriculture.

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Chitosans of different molecular weight enhance potato (Solanum tuberosum L.) yield in a field trial

Cited by 19 publications

References 15 publications

IMPACTS OF DIFFERENT CONCENTRATIONS AND TIMES OF APPLICATION OF CHITOSAN ON SWEET BASIL (Ocimum basilicum L.)

IMPACTS OF DIFFERENT CONCENTRATIONS AND TIMES OF APPLICATION OF CHITOSAN ON SWEET BASIL (Ocimum basilicum L.)

Transcriptome Analysis of Solanum Tuberosum Genotype RH89-039-16 in Response to Chitosan

Mechanism of Plant Growth Promotion and Disease Suppression by Chitosan Biopolymer

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