Wound‐induced systemic accumulation of a transcript coding for a Bowman‐Birk trypsin inhibitor‐related protein in maize (<i>Zea mays</i> L.) seedlings

Eckelkamp, Claudia; Ehmann, Bruno; Schöpfer, Peter

doi:10.1016/0014-5793(93)81451-5

Cited by 35 publications

(24 citation statements)

References 19 publications

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“…This protein is homologous to ribosome-inactivating proteins (W. Becker and K. Apel, personal communication) and may thus play a fundamental role in translational regulation. A better understanding of wound signalling in monocots is likely to emerge from work on wound-inducible Bowman-Birk trypsin inhibitor in maize seedlings [19]. In this system a wound signal is transmitted unidirectionally (upwards) to tissues distal to the wound site making this an attractive model for systemic signalling.…”

Section: Jasmonates As Wound Signalsmentioning

confidence: 99%

Fatty acid signalling in plants and their associated microorganisms

Farmer

1994

Plant Mol Biol

168

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Section: Jasmonates As Wound Signalsmentioning

confidence: 99%

Fatty acid signalling in plants and their associated microorganisms

Farmer

1994

Plant Mol Biol

168

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“…Wounding of the lower leaves of severa1 plant species results in the accumulation of defense proteins in wounded leaves and in unwounded leaves throughout the plants (Green and Ryan, 1972;Brown et al, 1985;Bradshaw et al, 1989;Eckelkamp et al, 1993;Cordero et al, 1994). Recent studies have provided evidence To whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

An octadecanoid pathway mutant (JL5) of tomato is compromised in signaling for defense against insect attack.

et al. 1996

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The activation of defense genes in tomato plants has been shown to be mediated by an octadecanoic acid-based signaling pathway in response to herbivore attack or other mechanical wounding. We report here that a tomato mutant (JL5) deficient in the activation of wound-inducible defense genes is also compromised in resistance toward the lepidopteran predator Manduca sexta (tobacco hornworm). Thus, we propose the name defenselessí (defl) for the mutation in the JL5 line that mediates this altered defense response. In experiments designed to define the normal function of DEFl, we found that defí plants are defective in defense gene signaling initiated by prosystemin overexpression in transgenic plants as well as by oligosaccharide (chitosan and polygalacturonide) and polypeptide (systemin) ellcitors. Supplementation of plants through their cut stems with intermediates of the octadecanoid pathway indicates that defí plants are affected in octadecanoid metabolism between the synthesis of hydroperoxylinolenic acid and 12-oxo-phytodlenoic acid. Consistent with this defect, defí plants are also compromised in their ability to accumulate jasmonic acíd, the end product of the pathway, in response to wounding and the aforementioned elicitors. Taken together, these results show that octadecanoid metabolism plays an essential role in the transduction of upstream wound signals to the activation of antiherbivore plant defenses.

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“…However, bsil which appeared to be related to BB-PIs was highly homologous to an aluminium-induced wheat gene, wali5a [45], and exhibited homology to a wound-induced protein, WIP1, from maize [11,41]. This suggested that bsil may be activated by wound damage rather than by a pathogen-derived elicitor.…”

Section: Discussionmentioning

confidence: 87%

Defence-related gene activation during an incompatible interaction between Stagonospora (Septoria) nodorum and barley (Hordeum vulgare L.) coleoptile cells

et al. 1996

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Two previously unidentified cDNA clones (bsi1 and bpr1-1) were isolated by differential hybridization from a cDNA library of Stagonospora (Septoria) nodorum (Berk) Castellani & E.G. Germano (teleomorph Phaeosphaeria (Leptosphaeria) nodorum (E. Muller) Hedjaroude-challenged barley (Hordeum vulgare L.) coleoptiles. bsi1 encoded a cysteine-rich protein containing 89 amino acids (aa) with a relative molecular mass (M(r)) of 9405. Protein sequence homologies showed that Bsi1 was very similar to an aluminium-induced protein from wheat and indicated that it was related to the Bowman-Birk-type proteinase inhibitors (BB-PIs). The predicted aa sequence of Bsi1 contained an N-terminal secretory signal sequence which implied that the protein was exported. The other clone, bprl-1, which was truncated at the 5' end, encoded a type-1 pathogenesis-related (PR-1) protein. The complete sequence of bpr1-1 was obtained after cloning a barley genomic DNA fragment and was shown to encode a basic protein containing 174 aa with a M(r) of 18 859. The deduced aa sequence of bpr1-1 contained both an N-terminal secretory signal sequence and a charged C-terminal extension. This latter sequence may represent a vacuolar targeting signal. bsil and bpr1-1 and four other defence-related genes (encoding 1,3-beta-glucanase, 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, a homologue of a putative wheat peroxidase, and barley leaf-specific thionin), showed increased transcription levels in S. nodorum-challenged coleoptiles, although their pattern of accumulation varied after inoculation (a.i.). The potential role of these induced genes in defence against fungal attack is discussed.

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Wound‐induced systemic accumulation of a transcript coding for a Bowman‐Birk trypsin inhibitor‐related protein in maize (Zea mays L.) seedlings

Cited by 35 publications

References 19 publications

Fatty acid signalling in plants and their associated microorganisms

Fatty acid signalling in plants and their associated microorganisms

An octadecanoid pathway mutant (JL5) of tomato is compromised in signaling for defense against insect attack.

Defence-related gene activation during an incompatible interaction between Stagonospora (Septoria) nodorum and barley (Hordeum vulgare L.) coleoptile cells

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