Biotic stress in plants: life lessons from your parents and grandparents

Dorantes-Acosta, Ana Elena; Sánchez-Hernández, Carla; Arteaga-Vázquez, Mario

doi:10.3389/fgene.2012.00256

Cited by 13 publications

(7 citation statements)

References 25 publications

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“…We suggest that future studies should address this hypothesis using a multispecies approach (Van Kleunen et al . ) in natural populations, where links between genotype diversity and pathogen infection may be less obvious (Roy ; Alexander ) and are additionally influenced by environmentally induced epigenetic modifications in plant defence (Dorantes‐Acosta, Sánchez‐Hernández & Arteaga‐Vazquez ; Hirsch, Baumberger & Grossniklaus ; Latzel et al . ).…”

Section: Discussionmentioning

confidence: 99%

Rapid transgenerational effects in Knautia arvensis in response to plant community diversity

et al. 2017

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1. Plant species persistence in natural communities requires coping with biotic and abiotic challenges. These challenges also depend on plant community composition and diversity. Over time, biodiversity effects have been shown to be strengthened via increasing species complementarity in mixtures. Little is known, however, whether differences in community diversity and composition induce rapid transgenerational phenotypic adaptive differentiation during community assembly. We expect altered plant-plant and other biotic interactions (mutualists or antagonists) in high vs. low diverse communities to affect immediate within-and between-species trait differentiations due to competition for light and nutrients. 2. Three years after the initiation of a large-scale, long-term biodiversity experiment in Jena, Germany, we tested for effects of varying experimental plant community diversity (1-60 plant species; one to four plant functional groups) and composition (with or without legumes and/or grasses) on phenotypic differentiation and variation of the tall herb Knautia arvensis. We measured reproduction at different diversity levels in the Jena Experiment (residents hereafter) and, in an additional common garden experiment without competition, recorded subsequent offspring performance (i.e. growth, reproductive success and susceptibility to powdery mildew) to test for differentiation in phenotypic expression and variability. 3. We observed phenotypic differences among diversity levels with reduced fecundity of K. arvensis residents in more diverse communities. In the next generation grown under common garden conditions, offspring from high-diversity plots showed reduced growth (i.e. height) and lower reproduction (i.e. fewer infructescences), but increased phenotypic trait variability (e.g. in leaf width and powdery mildew presence) and also tended to be less susceptible to powdery mildew infection. 4. Community composition also affected Knautia parents and offspring. In the presence of legumes, resident plants produced more seeds (increased fecundity); however, germination rate of those seeds was reduced at an early seedling stage (reduced fertility). 5. Synthesis. We conclude that rapid transgenerational effects of community diversity and composition on both mean and variation of phenotypic traits among offspring exist. In addition to heritable variation, environmentally induced epigenetic and/or maternal processes matter for early plant community assembly and may also determine future species coexistence and community stability. Recently, a largely positive diversity-ecosystem functioning relationship has been acknowledged (e.g. Mace et al. 2010; Hooper et al. 2012) based on observed diversity effects across trophic levels (Scherber et al. 2010) influencing multiple ecosystem functions (Lefcheck et al. 2015) and maintaining ecosystem services over time (Hector et al. 2010; Isbell et al. 2011). As a baseline, plants may adapt their phenotypes to different environments depending on the strength of selection and the amoun...

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Section: Discussionmentioning

confidence: 99%

Rapid transgenerational effects in Knautia arvensis in response to plant community diversity

et al. 2017

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“…Several phytohormones are known for their role in the response to abiotic and biotic stresses [ 1 ]. Abiotic stress responses are largely controlled by the hormone ABA while defense against different biotic constraints is specified by antagonism between the salicylic acid (SA) and jasmonic acid (JA) or ethylene signaling pathways [ 3 , 4 ]. This creates a complex network of interacting pathways and hormones cross-talk at different levels [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Auxin Response Factors (ARFs) are potential mediators of auxin action in tomato response to biotic and abiotic stress (Solanum lycopersicum)

et al. 2018

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Survival biomass production and crop yield are heavily constrained by a wide range of environmental stresses. Several phytohormones among which abscisic acid (ABA), ethylene and salicylic acid (SA) are known to mediate plant responses to these stresses. By contrast, the role of the plant hormone auxin in stress responses remains so far poorly studied. Auxin controls many aspects of plant growth and development, and Auxin Response Factors play a key role in the transcriptional activation or repression of auxin-responsive genes through direct binding to their promoters. As a mean to gain more insight on auxin involvement in a set of biotic and abiotic stress responses in tomato, the present study uncovers the expression pattern of SlARF genes in tomato plants subjected to biotic and abiotic stresses. In silico mining of the RNAseq data available through the public TomExpress web platform, identified several SlARFs as responsive to various pathogen infections induced by bacteria and viruses. Accordingly, sequence analysis revealed that 5’ regulatory regions of these SlARFs are enriched in biotic and abiotic stress-responsive cis-elements. Moreover, quantitative qPCR expression analysis revealed that many SlARFs were differentially expressed in tomato leaves and roots under salt, drought and flooding stress conditions. Further pointing to the putative role of SlARFs in stress responses, quantitative qPCR expression studies identified some miRNA precursors as potentially involved in the regulation of their SlARF target genes in roots exposed to salt and drought stresses. These data suggest an active regulation of SlARFs at the post-transcriptional level under stress conditions. Based on the substantial change in the transcript accumulation of several SlARF genes, the data presented in this work strongly support the involvement of auxin in stress responses thus enabling to identify a set of candidate SlARFs as potential mediators of biotic and abiotic stress responses.

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“…Transcriptomic comparisons of A. thaliana and E. salsugineum using microarrays and expressed sequence tags (ESTs) revealed that the expression levels of many stress-related genes in E. salsugineum are constitutively higher than their orthologs in A. thaliana , suggesting the transcriptional network is also modulated for a better fitness (Taji et al, 2004, 2010; Wong et al, 2006). Adaption of salt tolerance in plants may also involve the changes in epigenetic regulation systems, such as genes related to DNA methylation pathways have been shown to play important roles in stress responses (Dorantes-Acosta et al, 2012). In addition, it has been reported that changes of translation efficiency of proteins may play important roles in the phenotypic divergence among species (Man and Pilpel, 2007; Jiang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The Reference Genome of the Halophytic Plant Eutrema salsugineum

et al. 2013

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Halophytes are plants that can naturally tolerate high concentrations of salt in the soil, and their tolerance to salt stress may occur through various evolutionary and molecular mechanisms. Eutrema salsugineum is a halophytic species in the Brassicaceae that can naturally tolerate multiple types of abiotic stresses that typically limit crop productivity, including extreme salinity and cold. It has been widely used as a laboratorial model for stress biology research in plants. Here, we present the reference genome sequence (241 Mb) of E. salsugineum at 8× coverage sequenced using the traditional Sanger sequencing-based approach with comparison to its close relative Arabidopsis thaliana. The E. salsugineum genome contains 26,531 protein-coding genes and 51.4% of its genome is composed of repetitive sequences that mostly reside in pericentromeric regions. Comparative analyses of the genome structures, protein-coding genes, microRNAs, stress-related pathways, and estimated translation efficiency of proteins between E. salsugineum and A. thaliana suggest that halophyte adaptation to environmental stresses may occur via a global network adjustment of multiple regulatory mechanisms. The E. salsugineum genome provides a resource to identify naturally occurring genetic alterations contributing to the adaptation of halophytic plants to salinity and that might be bioengineered in related crop species.

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Biotic stress in plants: life lessons from your parents and grandparents

Cited by 13 publications

References 25 publications

Rapid transgenerational effects in Knautia arvensis in response to plant community diversity

Rapid transgenerational effects in Knautia arvensis in response to plant community diversity

Auxin Response Factors (ARFs) are potential mediators of auxin action in tomato response to biotic and abiotic stress (Solanum lycopersicum)

The Reference Genome of the Halophytic Plant Eutrema salsugineum

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