Application of mathematical models to describe rice growth and nutrients uptake in the presence of plant growth promoting microorganisms

Bakhshandeh, Esmaeil; Pirdashti, Hemmatollah; Gilani, Zahra

doi:10.1016/j.apsoil.2017.10.040

Cited by 23 publications

(13 citation statements)

References 30 publications

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“…The results showed that the KSB inoculations not only enhanced the rice K accumulation, but also increased the grain yield, especially, when they were applied with ½ K chemical fertilizer. These findings are in agreement with Bakhshandeh et al (2018), who reported that the mineral et al (2017) showed in rice that the PGPR inoculation significantly enhanced K uptake by leaves, stem, and roots up to 77, 53, and 75% as compared to the control, respectively. In other study, Yaghoubi Khanghahi et al (2018a) showed that rice plants inoculated with KSB had higher K concentration in grain as compared to the noninoculated plants.…”

Section: Discussionsupporting

confidence: 93%

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Khanghahi¹,

Pirdashti²,

Rahimian³

et al. 2019

Photosynt.

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The current research was performed to investigate the effects of three potassium-solubilizing bacteria (KSB) strains (Pantoea agglomerans, Rahnella aquatilis, and Pseudomonas orientalis) on leaf photosynthetic characteristics in rice (Oryza sativa L. cv. Pajohesh). A pot and a field experiment were conducted in a paddy field. The results indicated that the KSB inoculums significantly enhanced chlorophyll (Chl) a, Chl a+b, SPAD value, and stomatal conductance as compared to the control in both experiments, especially when applied along with half the recommended dose of the potassium chemical fertilizer. KSB inoculations, alone or combined with K fertilizer, significantly increased the value of photochemical quenching, photosynthetic electron transport rate, and the effective quantum efficiency as compared to the control. In conclusion, these native KSB strains could be used as inoculants to reduce consumption of K chemical fertilizer and improve the efficiency of photosynthesis for rice production under the flooding irrigation conditions.

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Section: Discussionsupporting

confidence: 93%

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Khanghahi¹,

Pirdashti²,

Rahimian³

et al. 2019

Photosynt.

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“…Potassium remobilization was also increased from flag leaves to the grains. These results are in agreement with Bakhshandeh et al (2013Bakhshandeh et al ( , 2017b who reported that the higher uptake of N, P and K by the rice can enhance the nutrients accumulation in the grain. It has already been reported that about 15% of total K uptake in rice plant will be redistributed to the grain (Fageria et al 2011).…”

Section: Discussionsupporting

confidence: 93%

“…The results indicated that the KSB inoculations not only increased K uptake by grain and straw, but also enhanced the N and P concentrations in the grain and straw, especially when they were applied in combination with ½ K chemical fertilizer. These findings are in agreement with Bakhshandeh et al (2017aBakhshandeh et al ( , 2017b and Bahadur et al (2016) who reported that the mineral nutrient (especially K) uptake by plant increased as influenced by bio-inoculation. In fact, these bacterial strains may be able to solubilize other unavailable mineral nutrients such as P and to fix nitrogen.…”

Section: Discussionsupporting

confidence: 93%

“…Based on the results, NPK chemical fertilizer treatment showed better results than other treatments on K uptake by grain and straw. This result is confirmed by Bakhshandeh et al (2017b). Nevertheless, the highest N and P uptake achieved by KSB inoculations coupled with ½ K fertilizer.…”

Section: Discussionsupporting

confidence: 63%

“…It has already been reported that about 15% of total K uptake in rice plant will be redistributed to the grain (Fageria et al 2011). Bakhshandeh et al (2017b) indicated that grain N concentration increased by 5.1% with the application of K chemical fertilizer. However, some studies have shown that the KSB inoculations enhanced the amount of K uptake by plant such as rice (Balasubramaniam and Subramanian 2006) and maize (Abou-el-Seoud and Abdel-Megeed 2012), but we did not find any document that indicates the effect of potassium solubilizing bacteria on N, P and K remobilization of rice in the past.…”

Section: Discussionmentioning

confidence: 97%

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Nutrient use efficiency and nutrient uptake promoting of rice by potassium solubilizing bacteria (KSB)

Khanghahi

Pirdashti

Rahimian

et al. 2018

Cereal Research Communications

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The current study was carried out in both pot and field conditions to investigate the effects of three KSB strains of Pantoea agglomerans, Rahnella aquatilis and Pseudomonas orientalis on nitrogen (N), phosphorous (P) and potassium (K) uptake, nutrient use efficiency parameters and nutrients remobilization in rice (Oryza sativa L. cv. Pajohesh). The experiments included 15 treatments of KSB inoculations, commercial K biofertilizer and K chemical fertilizer. The results showed that the inoculums of all three KSB strains increased the K, N and P uptake by grain and straw, especially when applied in combination with ½ K chemical fertilizer (47.5 Kg/ha) as compared to the control treatment. The highest value of available K in the soil obtained from NPK chemical fertilizer equal to 140.1 and 134.6 mg K per kg of soil in the pot and field experiments, respectively, which were significantly higher than KSB inoculations treatments. Bacterial inoculums coupled with ½ K chemical fertilizer also enhanced the nutrient use efficiency (including agronomic efficiency (AE), apparent recovery efficiency (ARE), physiological efficiency (PE), agro-physiological efficiency (APE), internal utilization efficiency (UE), partial factor productivity (PFP), partial nutrient balance (PNB)) and nutrient remobilization. The results indicated that the bioinoculation with these KSB strains isolated from soil paddy could be considered as an effective way to increase potassium, nitrogen and phosphorus uptake by rice plant and enhance their use efficiency and remobilization to grains in the flooding irrigation conditions.

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Colonization of Piriformospora indica enhances rice resistance against the brown planthopper Nilaparvata lugens

Xu,

Li,

Gui

et al. 2024

Pest Management Science

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BACKGROUNDPiriformospora indica is an endophytic fungus that can promote the growth and confer the resistance against diverse stresses in host plants by root colonization. However, the effects of P. indica colonization on improving plant resistance to insect pests are still less explored. The brown planthopper (BPH) Nilaparvata lugens is a serious monophagous pest that causes extensive damage to rice plants. Here, we aimed to evaluate the effects of P. indica colonization on rice resistance against BPH.RESULTSThe colonization of P. indica in the rice roots resisted the damage from BPH. The age‐stage, two‐sex life table analyses showed that feeding on P. indica‐colonized rice plants affected BPH's female adult longevity, oviposition period, fecundity, population parameters and population size. BPH female adults feeding on P. indica‐colonized plants excreted less honeydew. P. indica colonization remarkably increased the duration of np, N2, and N3 waveform, as well as the occurrences of N1 and N2, and decreased the duration of N4‐b for BPH on rice plants. Meanwhile, the weight of BPH on the colonized plants was significantly lower than the control. In addition, the feeding and oviposition preferences of BPH to P. indica‐colonized plants were reduced. qRT‐RCR analyses revealed that P. indica colonization induced the expressions of jasmonic acid (JA)‐ and salicylic acid (SA)‐related genes in rice plants.CONCLUSIONP. indica colonization can reduce BPH performance on rice plants with potentially inhibitory effects on population growth. Collectively, these results support the potential for endophytically colonized P. indica as an effective strategy to improve insect resistance of crops.This article is protected by copyright. All rights reserved.

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Application of mathematical models to describe rice growth and nutrients uptake in the presence of plant growth promoting microorganisms

Cited by 23 publications

References 30 publications

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

Nutrient use efficiency and nutrient uptake promoting of rice by potassium solubilizing bacteria (KSB)

Colonization of Piriformospora indica enhances rice resistance against the brown planthopper Nilaparvata lugens

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