Water balance altered in cucumber plants infected with Fusarium oxysporum f. sp. cucumerinum

Wang, Min; Sun, Yuming; Sun, Guomei; Liu, Xiaokang; Zhai, Luchong; Shen, Qirong; Guo, Shiwei

doi:10.1038/srep07722

Cited by 81 publications

(78 citation statements)

References 59 publications

(78 reference statements)

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“…The reduction in gas exchange rate and stomatal conductance has been attributed to the pathogen infection in higher plants (Wang et al 2015). The blockage of the vascular system of plants because of Fusarium infection increases resistance to water movement which may induce symptoms similar to drought stress in plants.…”

Section: Discussionmentioning

confidence: 99%

Potential of Fusarium wilt-inducing chlamydospores, in vitro behaviour in root exudates and physiology of tomato in biochar and compost amended soil

et al. 2016

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Background and aims Biochars are recognised for their ability to improve soil functions and to stimulate plant defense mechanisms. We evaluated the response of Fusarium oxysporum f. sp. lycopersici chlamydospores to tomato plants grown in biochar and compost amended soil to get a deeper insight into the tomato-Fusarium pathosystem. Methods Wood chips and green waste biochar in combination with compost ('WCB comp and GWB comp ' respectively) were studied for their ability to suppress the Fusarium chlamydospores infectivity. Plant growth parameters and in vitro effects on chlamydospores were determined. Results The 'GWB comp ' soil amendment stimulated plants growth and gaseous exchange rates and had a suppressive effect on the chlamydospore infectivity in comparison with the 'WCB comp ' treatment and the treatment containing compost only. The germination rate of chlamydospores was unaffected by the source of root exudates, whereas the mycelial growth was significantly higher in root exudates from chlamydospore inoculated plants grown in 'WCB comp ' amended soil unlike to 'GWB comp ' amended soil. Conclusion Overall, our findings indicate that both biochars had a variable effect on chlamydospores. We conclude that soil amendment with garden waste biochar and compost exhibit a great potential in suppressing Fusarium chlamydospore infectivity and alleviating pathogen-induced physiological stress in tomato plants.

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Section: Discussionmentioning

confidence: 99%

Potential of Fusarium wilt-inducing chlamydospores, in vitro behaviour in root exudates and physiology of tomato in biochar and compost amended soil

et al. 2016

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“…The Fusarium oxysporum fungus infects the host plant via the roots or stem and induces wilting of plants due to disruption of water balance. The disturbed water balances resulted in reduced root water uptake, increased resistance to water flow through xylem elements and increased water losses from damaged cells (Wang M. et al, 2012, 2015). This type of physiological alteration in chickpea plants in response to Fusarium oxysporum infection likely regulated the expression of some of the observed changes in expression of CaAQP genes.…”

Section: Resultsmentioning

confidence: 99%

Genome-Wide Analysis of the Aquaporin Gene Family in Chickpea (Cicer arietinum L.)

Deokar

Tar’an

2016

Front. Plant Sci.

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Aquaporins (AQPs) are essential membrane proteins that play critical role in the transport of water and many other solutes across cell membranes. In this study, a comprehensive genome-wide analysis identified 40 AQP genes in chickpea (Cicer arietinum L.). A complete overview of the chickpea AQP (CaAQP) gene family is presented, including their chromosomal locations, gene structure, phylogeny, gene duplication, conserved functional motifs, gene expression, and conserved promoter motifs. To understand AQP's evolution, a comparative analysis of chickpea AQPs with AQP orthologs from soybean, Medicago, common bean, and Arabidopsis was performed. The chickpea AQP genes were found on all of the chickpea chromosomes, except chromosome 7, with a maximum of six genes on chromosome 6, and a minimum of one gene on chromosome 5. Gene duplication analysis indicated that the expansion of chickpea AQP gene family might have been due to segmental and tandem duplications. CaAQPs were grouped into four subfamilies including 15 NOD26-like intrinsic proteins (NIPs), 13 tonoplast intrinsic proteins (TIPs), eight plasma membrane intrinsic proteins (PIPs), and four small basic intrinsic proteins (SIPs) based on sequence similarities and phylogenetic position. Gene structure analysis revealed a highly conserved exon-intron pattern within CaAQP subfamilies supporting the CaAQP family classification. Functional prediction based on conserved Ar/R selectivity filters, Froger's residues, and specificity-determining positions suggested wide differences in substrate specificity among the subfamilies of CaAQPs. Expression analysis of the AQP genes indicated that some of the genes are tissue-specific, whereas few other AQP genes showed differential expression in response to biotic and abiotic stresses. Promoter profiling of CaAQP genes for conserved cis-acting regulatory elements revealed enrichment of cis-elements involved in circadian control, light response, defense and stress responsiveness reflecting their varying pattern of gene expression and potential involvement in biotic and abiotic stress responses. The current study presents the first detailed genome-wide analysis of the AQP gene family in chickpea and provides valuable information for further functional analysis to infer the role of AQP in the adaptation of chickpea in diverse environmental conditions.

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“…Sugar phloem loading occurs primarily through apoplastic and symplastic pathways (Braun et al 2014). As mentioned before, toxins produced by pathogens may damage cell membranes (Wang et al 2015a). Our study showed that the relative electrical conductivity and MDA content were highest in K-deficient rice (Fig.…”

Section: Analyzing the Primary Limiting Factors To Nsc Translocation mentioning

confidence: 98%

“…The diseased FL and FLS used for microscopic observation were prepared using the method reported by Wang et al (2015a) with some modifications. Three tillers were removed from each pot at 10 DPI and then washed with sterile water and immersed in dilute red ink for 12 h, with humidity at 60-80%.…”

Section: Microstructure Observationmentioning

confidence: 99%

Potassium deficiency aggravates yield loss in rice by restricting the translocation of non‐structural carbohydrates under Sarocladium oryzae infection condition

Zhang

Pan

et al. 2019

Physiologia Plantarum

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Sheath rot disease (ShR) caused by Sarocladium oryzae (S. oryzae) infection is an emerging disease that causes severe yield loss by restricting the translocation of non‐structural carbohydrates (NSC). Potassium (K) nutrition plays a critical role in disease resistance and the exportation of NSC. However, the physiological mechanisms of K with respect to ShR have not been thoroughly elucidated to date. The objectives of this study were to reveal the mechanisms by which K increases ShR resistance by regulating NSC translocation of rice, therefore, a field experiment combined with an inoculation experiment was conducted. We demonstrate that ShR disease incidence and disease index decreased dramatically with an increasing K application. K deficiency sharply induced the accumulation of NSC in the flag leaf (FL) and flag leaf sheath (FLS) under S. oryzae infection condition, which reduced the contribution of transferred NSC to final yield. A permutational multivariate analysis showed that K deficiency had a greater (49.0%, P < 0.001) effect on the NSC content variation in FL than that of S. oryzae infection (15.0%, P < 0.001). S. oryzae infection dramatically increased the difference in apparent transferred mass of NSC and cell membrane injury of diseased organs between K‐deficient and K‐sufficient rice. Finally, we demonstrate that cell membrane injury was a limiting factor imposed by K deficiency, which restricts the export of NSC from source organs. This work highlights the importance of K in improving ShR resistance by regulating NSC translocation (particularly the stem NSC).

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Water balance altered in cucumber plants infected with Fusarium oxysporum f. sp. cucumerinum

Cited by 81 publications

References 59 publications

Potential of Fusarium wilt-inducing chlamydospores, in vitro behaviour in root exudates and physiology of tomato in biochar and compost amended soil

Potential of Fusarium wilt-inducing chlamydospores, in vitro behaviour in root exudates and physiology of tomato in biochar and compost amended soil

Genome-Wide Analysis of the Aquaporin Gene Family in Chickpea (Cicer arietinum L.)

Potassium deficiency aggravates yield loss in rice by restricting the translocation of non‐structural carbohydrates under Sarocladium oryzae infection condition

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