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Waters, Brian M.; Blevins, Dale G.

doi:10.1023/a:1026513022280

Cited by 45 publications

(5 citation statements)

References 33 publications

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“…This higher ethylene production occurred 3-9 d after removing Fe from the nutrient solution (depending on the species), when plants still did not show severe deficiency symptoms (Romera et al . 1999;Waters and Blevins 2000). This observation suggests that the increase in ethylene production was due to the Fe-deficiency itself and not to an indirect effect.…”

Section: Ethylene Production By Fe-sufficient and Fe-deficient Plantsmentioning

confidence: 85%

“…Moreover, the increase in ethylene production was parallel to the induction of several Fe-deficiency stress responses, such as enhanced ferric reducing capacity, subapical root hairs and acidification (Romera et al . 1999;Waters and Blevins 2000).…”

Section: Ethylene Production By Fe-sufficient and Fe-deficient Plantsmentioning

confidence: 99%

“…Within parentheses is the number of days in the -Fe treatment. (Data re-elaborated fromRomera et al 1999 andBlevins 2000).…”

mentioning

confidence: 99%

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Ethylene involvement in the regulation of Fe-deficiency stress responses by Strategy I plants

Romera¹,

Alcántara²

2004

Functional Plant Biol.

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Plants have developed different mechanisms for the acquisition of iron (Fe). Depending on the mechanisms, plants are classified into two groups: Strategy I and Strategy II. Strategy I plants include all higher plants except the Gramineae, while Strategy II plants comprise the Gramineae. When plants suffer from Fe-deficiency, they develop several morphological and physiological changes in their roots, known as Fe-deficiency stress responses, which disappear when the plants acquire enough Fe. In Strategy I plants, these changes include subapical swelling with abundant root hairs, transfer cells, acidification of the rhizosphere, enhancement of the capacity to reduce Fe3+ to Fe2+, enhancement of the capacity for Fe2+ uptake, release of flavins, and others. The regulation of these responses is not fully understood but in recent years there has been evidence suggesting the involvement of ethylene in this process. This review summarises different results that support a role for this hormone in the regulation of Fe-deficiency stress responses by Strategy I plants.

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Section: Ethylene Production By Fe-sufficient and Fe-deficient Plantsmentioning

confidence: 85%

Section: Ethylene Production By Fe-sufficient and Fe-deficient Plantsmentioning

confidence: 99%

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Ethylene involvement in the regulation of Fe-deficiency stress responses by Strategy I plants

Romera¹,

Alcántara²

2004

Functional Plant Biol.

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“…In Arabidopsis, bHLH038 plays a major role in the -Fe stress response [18,25,85]. Also involved in the iron deficiency stress response is Glyma.07G128000, homologous to the Arabidopsis ACS7, which is involved in IDC induced ethylene biosynthesis [86]. In -Fe stressed Arabidopsis, ethylene production is upregulated and serves as an important signal to regulate -Fe responses [87][88][89].…”

Section: Genes Unique To Sequential Stress Responsementioning

confidence: 99%

Gene Expression Responses to Sequential Nutrient Deficiency Stresses in Soybean

O’Rourke

Graham

2021

IJMS

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Throughout the growing season, crops experience a multitude of short periods of various abiotic stresses. These stress events have long-term impacts on plant performance and yield. It is imperative to improve our understanding of the genes and biological processes underlying plant stress tolerance to mitigate end of season yield loss. The majority of studies examining transcriptional changes induced by stress focus on single stress events. Few studies have been performed in model or crop species to examine transcriptional responses of plants exposed to repeated or sequential stress exposure, which better reflect field conditions. In this study, we examine the transcriptional profile of soybean plants exposed to iron deficiency stress followed by phosphate deficiency stress (-Fe-Pi). Comparing this response to previous studies, we identified a core suite of genes conserved across all repeated stress exposures (-Fe-Pi, -Fe-Fe, -Pi-Pi). Additionally, we determined transcriptional response to sequential stress exposure (-Fe-Pi) involves genes usually associated with reproduction, not stress responses. These findings highlight the plasticity of the plant transcriptome and the complexity of unraveling stress response pathways.

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“…ETHYLENE INSENSITIVE 3 (EIN3) and ETHYLENE INSENSITIVE3-LIKE 1 (EIL1), two major transcription factors in ethylene signal transduction, interact with FIT, MED16 (MEDIATOR 16), and MED25 to activate the Fe deficiency response in Arabidopsis (Lingam et al, 2011;Yang et al, 2014;Zhang et al, 2014). In turn, Fe deficiency enhances ethylene production and signaling (Waters & Blevins, 2000;Wu et al, 2011;Lucena et al, 2015;Ye et al, 2015). Thus, there is a positive feedback between Fe deficiency responses and ethylene synthesis.…”

Section: Introductionmentioning

confidence: 99%

Fe deficiency‐induced ethylene synthesis confers resistance to Botrytis cinerea

Liang

2022

New Phytologist

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Although iron (Fe) deficiency is an adverse condition to growth and development of plants, it increases the resistance to pathogens. How Fe deficiency induces the resistance to pathogens is still unclear.Here, we reveal that the inoculation of Botrytis cinerea activates the Fe deficiency response of plants, which further induces ethylene synthesis and then resistance to B. cinerea.FIT and bHLH Ib are a pair of bHLH transcription factors, which control the Fe deficiency response. Both the Fe deficiency-induced ethylene synthesis and resistance are blocked in fit-2 and bhlh4x-1 (a quadruple mutant for four bHLH Ib members). SAM1 and SAM2, two ethylene synthesis-associated genes, are induced by Fe deficiency in a FIT-bHLH Ibdependent manner. Moreover, SAM1 and SAM2 are required for the increased ethylene and resistance to B. cinerea under Fe-deficient conditions.Our findings suggest that the FIT-bHLH Ib module activates the expression of SAM1 and SAM2, thereby inducing ethylene synthesis and resistance to B. cinerea. This study uncovers that Fe signaling also functions as a part of the plant immune system against pathogens.

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Untitled

Cited by 45 publications

References 33 publications

Ethylene involvement in the regulation of Fe-deficiency stress responses by Strategy I plants

Ethylene involvement in the regulation of Fe-deficiency stress responses by Strategy I plants

Gene Expression Responses to Sequential Nutrient Deficiency Stresses in Soybean

Fe deficiency‐induced ethylene synthesis confers resistance to Botrytis cinerea

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