Responses of tomato plants associated with the arbuscular mycorrhizal fungus <i>Glomus clarum</i> during drought and recovery

Dell'Amico, J. M.; Torrecillas, A.; Rodrı́guez, P.; Morte, Asunción; Sánchez-Blanco, María Jesús

doi:10.1017/s0021859602002101

Cited by 61 publications

(41 citation statements)

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“…The lower values of L in AM plants than in nonAM plants disagree with previous reports that have showed enhanced L in droughted tomato, rosemary and lettuce AM plants as compared to nonAM plants (Dell'amico et al 2002;Sánchez-Blanco et al 2004;Aroca et al 2008b). Nevertheless, Augé (2001) reported that root hydraulic conductivity is generally not improved by the AM symbiosis in the absence of AM-induced growth or P effects, as we found for plant growth in this study.…”

Section: Root Hydraulic Properties and Pip Aquaporin Gene Expression contrasting

confidence: 99%

Exogenous ABA accentuates the differences in root hydraulic properties between mycorrhizal and non mycorrhizal maize plants through regulation of PIP aquaporins

et al. 2009

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The arbuscular mycorrhizal (AM) symbiosis has been shown to modulate the same physiological processes as the phytohormone abscisic acid (ABA) and to improve plant tolerance to water deficit. The aim of the present research was to evaluate the combined influence of AM symbiosis and exogenous ABA application on plant root hydraulic properties and on plasma-membrane intrinsic proteins (PIP) aquaporin gene expression and protein accumulation after both a drought and a recovery period. Results obtained showed that the application of exogenous ABA enhanced osmotic root hydraulic conductivity (L) in all plants, regardless of water conditions, and that AM plants showed lower L values than nonAM plants, a difference that was especially accentuated when plants were supplied with exogenous ABA. This effect was clearly correlated with the accumulation pattern of the different PIPs analyzed, since most showed reduced expression and protein levels in AM plants fed with ABA as compared to their nonAM counterparts. The possible involvement of plant PIP aquaporins in the differential regulation of L by ABA in AM and nonAM plants is further discussed.

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Section: Root Hydraulic Properties and Pip Aquaporin Gene Expression contrasting

confidence: 99%

Exogenous ABA accentuates the differences in root hydraulic properties between mycorrhizal and non mycorrhizal maize plants through regulation of PIP aquaporins

et al. 2009

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“…Previous work also studied the relationship between tomato and AM fungi under WS (Dell'Amico et al, 2002;Subramanian et al, 2006;Aroca et al, 2008;Wang et al, 2014;Ruiz-Lozano et al, 2016). The discrepancy among data already available could be due to the use of different plant varieties and fungal species/isolates as well as to different growth and drought stress conditions (Augé et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Insights On the Impact of Arbuscular Mycorrhizal Symbiosis On Tomato Tolerance to Water Stress

et al. 2016

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Arbuscular mycorrhizal (AM) fungi, which form symbioses with the roots of the most important crop species, are usually considered biofertilizers, whose exploitation could represent a promising avenue for the development in the future of a more sustainable next-generation agriculture. The best understood function in symbiosis is an improvement in plant mineral nutrient acquisition, as exchange for carbon compounds derived from the photosynthetic process: this can enhance host growth and tolerance to environmental stresses, such as water stress (WS). However, physiological and molecular mechanisms occurring in arbuscular mycorrhiza-colonized plants and directly involved in the mitigation of WS effects need to be further investigated. The main goal of this work is to verify the potential impact of AM symbiosis on the plant response to WS. To this aim, the effect of two AM fungi (Funneliformis mosseae and Rhizophagus intraradices) on tomato (Solanum lycopersicum) under the WS condition was studied. A combined approach, involving ecophysiological, morphometric, biochemical, and molecular analyses, has been used to highlight the mechanisms involved in plant response to WS during AM symbiosis. Gene expression analyses focused on a set of target genes putatively involved in the plant response to drought, and in parallel, we considered the expression changes induced by the imposed stress on a group of fungal genes playing a key role in the water-transport process. Taken together, the results show that AM symbiosis positively affects the tolerance to WS in tomato, with a different plant response depending on the AM fungi species involved.

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“…Processing tomato is one of the most economically important and widespread horticultural crops in the world [6,7], and in 2018, its production was~34 million tons [8]. In addition, processing tomato is extremely dependent on irrigation water, the average water requirement ranging from~400 to 600 mm during the growing season based on the climatic conditions of the area [9].…”

Section: Introductionmentioning

confidence: 99%

“…AM fungi are ubiquitous in soil and establish symbiotic relationships with the roots of many cultivated plants [6,16,17]. Plant-AM fungi interaction is mutualistic as the fungi can help plants overcome abiotic and biotic stresses and improve mineral nutrient and water uptake while the host plant provides photosynthates [16] and lipids [18].…”

Section: Introductionmentioning

confidence: 99%

Interaction of Tomato Genotypes and Arbuscular Mycorrhizal Fungi under Reduced Irrigation

et al. 2019

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Climate change is increasing drought events and decreasing water availability. Tomato is commonly transplanted to an open field after seedling production in a nursery, requiring large volumes of water. Arbuscular mycorrhizal (AM) fungi help plants cope with drought stress; however, their effects depend on plant genotype and environmental conditions. In this study, we assessed the interactions among different tomato seedling genotypes and two AM fungi, Funneliformis mosseae and Rhizophagus intraradices, under two water regimes, full and reduced. Our results showed that F. mosseae was more effective than R. intraradices in the mitigation of drought stress both in old and modern genotypes. However, seedlings inoculated with R. intraradices recorded the highest values of leaf area. ‘Pearson’ and ‘Everton’ genotypes inoculated with F. mosseae recorded the highest values of root, leaf, and total dry weights under reduced and full irrigation regimes, respectively. In addition, ‘Pearson’ and ‘H3402’ genotypes inoculated with F. mosseae under a reduced irrigation regime displayed high values of water use efficiency. Our results highlight the importance of using AM fungi to mitigate drought stress in nursery production of tomato seedlings. However, the development of ad hoc AM fungal formulations, which consider genotype x AM fungi interactions, is fundamental for achieving the best agronomic performances.

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Responses of tomato plants associated with the arbuscular mycorrhizal fungus Glomus clarum during drought and recovery

Cited by 61 publications

References 0 publications

Exogenous ABA accentuates the differences in root hydraulic properties between mycorrhizal and non mycorrhizal maize plants through regulation of PIP aquaporins

Exogenous ABA accentuates the differences in root hydraulic properties between mycorrhizal and non mycorrhizal maize plants through regulation of PIP aquaporins

Insights On the Impact of Arbuscular Mycorrhizal Symbiosis On Tomato Tolerance to Water Stress

Interaction of Tomato Genotypes and Arbuscular Mycorrhizal Fungi under Reduced Irrigation

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