Jasmonates in Plant Growth and Stress Responses

Wasternack, Claus

doi:10.1007/978-1-4939-0491-4_8

Cited by 11 publications

(7 citation statements)

References 265 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The JA-mediated signaling pathway is regarded as an important component of the regulatory network that is involved in responses to pathogen attack 3 , 4 . JA-mediated regulation is embodied in the expression levels of several key components that catalyze JA biosynthesis and maintain the balance of JA levels 3 . For example, 13-lipoxygenases (13-LOXs), AOC and OPR catalyze the three critical steps in JA biosynthesis and are involved in JA-dependent responses 4 .…”

Section: Discussionmentioning

confidence: 99%

“…Jasmonates (JAs), which comprise jasmonic acid (JA) and its derivatives, are involved in many developmental processes, such as seed germination, growth, leaf senescence, and reproduction, and they are also involved in defending the plant against biotic stressors, such as pathogens, herbivores, and nematodes, and regulating plant responses to stimuli and signals that originate in the environment 3 , 4 . Several key components that catalyze JA biosynthesis are essential for regulating JA-mediated processes by controlling the balance of JA levels 3 , 4 . Abscisic acid (ABA) is another essential phytohormone that regulates aspects of plant development, including seedling growth, seed maturation, seed dormancy, and stomatal behavior.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Protein Elicitor PevD1 Enhances Resistance to Pathogens and Promotes Growth in Arabidopsis

et al. 2016

View full text Add to dashboard Cite

The protein elicitor PevD1, isolated from Verticillium dahlia, could enhance resistance to TMV in tobacco and Verticillium wilt in cotton. Here, the pevd1 gene was over-expressed in wild type (WT) Arabidopsis, and its biological functions were investigated. Our results showed that the transgenic lines were more resistant to Botrytis cinerea and Pseudomonas syringae pv. tomato DC3000 than the WT line was. In transgenic plants, both the germination time and bolting time required were significantly shorter and fresh weights and plant heights were significantly higher than those in the WT line. A transcriptomics study using digital gene expression profiling (DGE) was performed in transgenic and WT Arabidopsis. One hundred and thirty-six differentially expressed genes were identified. In transgenic Arabidopsis, three critical regulators of JA biosynthesis were up-regulated and JA levels were slightly increased. Three important repressors of the ABA-responsive pathway were up-regulated, indicating that ABA signal transduction may be suppressed. One CML and two WRKY TFs involved in Ca2+-responsive pathways were up-regulated, indicating that this pathway may have been triggered. In conclusion, we show that PevD1 is involved in regulating several plant endogenous signal transduction pathways and regulatory networks to enhance resistance and promote growth and development in Arabidopsis.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Protein Elicitor PevD1 Enhances Resistance to Pathogens and Promotes Growth in Arabidopsis

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Ethylene is a strong controller of root development, and it has been suggested that it is involved in the increase of lateral root development in nutrient-rich soil patches (selective root placement) (Visser et al 1997;Clark et al 1999;Visser et al 2008). Jasmonates are known to affect root growth and development in various ways (Wasternack and Hause 2013;Wasternack 2014) and were therefore chosen as good candidates to gain initial insight into the regulation of LR growth responses toward localized micronutrient patches. To explore the roles that the biosynthesis and perception of these hormones play in controlling nutrient-induced root chemotropism, we made use of transgenic N. attenuata plants which overexpress or are silenced in ethylene-(sETR and irACO) (von Dahl et al 2007) or jasmonate-related (irAOC, irCOI1, irJAR4/6) genes (Paschold et al 2007;Wang et al 2008;Kallenbach et al 2012).…”

Section: Phytohormone Regulation Of Lr Chemotropismmentioning

confidence: 99%

Localized micronutrient patches induce lateral root foraging and chemotropism in Nicotiana attenuata

Ferrieri

Machado

Arce

et al. 2017

JIPB

View full text Add to dashboard Cite

Nutrients are distributed unevenly in the soil. Phenotypic plasticity in root growth and proliferation may enable plants to cope with this variation and effectively forage for essential nutrients. However, how micronutrients shape root architecture of plants in their natural environments is poorly understood. We used a combination of field and laboratory-based assays to determine the capacity of Nicotiana attenuata to direct root growth towards localized nutrient patches in its native environment. Plants growing in nature displayed a particular root phenotype consisting of a single primary root and a few long, shallow lateral roots. Analysis of bulk soil surrounding the lateral roots revealed a strong positive correlation between lateral root placement and micronutrient gradients, including copper, iron and zinc. In laboratory assays, the application of localized micronutrient salts close to lateral root tips led to roots bending in the direction of copper and iron. This form of chemotropism was absent in ethylene and jasmonic acid deficient lines, suggesting that it is controlled in part by these two hormones. This work demonstrates that directed root growth underlies foraging behavior, and suggests that chemotropism and micronutrient-guided root placement are important factors that shape root architecture in nature.

show abstract

“…The JA pathway is SA-independent and is traditionally attributed to immunity against necrotrophic pathogens. JA induces transcripts DAD1, LOX2, AOS, and OPR3 as well as PR genes [58]. JA also stimulates induced systemic resistance, a systemic resistance similar to SAR by defending the plant against a broad range of pathogens [59].…”

Section: Plant Defense Pathwaysmentioning

confidence: 99%

Infection Mechanisms and Colonization Patterns of Fungi Associated with Soybean

Pawlowski¹,

Hartman²

2016

Fungal Pathogenicity

View full text Add to dashboard Cite

Fungi have many kinds of unique associations with plants. These associations can benefit both the fungus and the plant, or can be detrimental to the plants and cause disease and even plant death. Land plants evolved over 425 million years ago, and fungi have been associated with their evolutionary development over the millennia. In reference to nutrient sequestration, fungal associations with plants are characterized as biotrophic, necrotrophic, or a mixture of these types. Biotrophs usually grow only on living plant tissue extracting nutrients from living plant cells. They can be pathogenic or symbiotic. In a symbiotic relationship, fungi gain carbon from the plant in exchange for nutrients and water unattainable by the plant. Necrotrophs promote host cell death to acquire nutrients for growth and reproduction. Each type of association is equipped with its own unique collection of biochemical and mechanical infection and colonization mechanisms. In turn, plants have evolved to have a complex network of genes to interact with a broad range of fungi. This chapter will provide an overview of three different types of fungal infection and colonization patterns with examples relevant to soybean as well as define defense mechanisms that the plant uses to interact with these microbes.

show abstract

Jasmonates in Plant Growth and Stress Responses

Cited by 11 publications

References 265 publications

The Protein Elicitor PevD1 Enhances Resistance to Pathogens and Promotes Growth in Arabidopsis

The Protein Elicitor PevD1 Enhances Resistance to Pathogens and Promotes Growth in Arabidopsis

Localized micronutrient patches induce lateral root foraging and chemotropism in Nicotiana attenuata

Infection Mechanisms and Colonization Patterns of Fungi Associated with Soybean

Contact Info

Product

Resources

About