Germin and Germin-like Proteins: Evolution, Structure, and Function

Dunwell, J. M.; Gibbings, J. George; Mahmood, Tariq; Naqvi, Syed Muhammad Saqlan

doi:10.1080/07352680802333938

Cited by 195 publications

(163 citation statements)

References 340 publications

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“…Minor QTL for sheath blight resistance have also been identified in this chromosomal region (Pinson et al, 2005). Oxalate oxidase-like genes, now referred to as germin-like protein (GLP) genes, belong to the functionally diverse cupin superfamily and have been identified in Arabidopsis (Arabidopsis thaliana), grapevine (Vitis vinifera), and many Gramineae species (Membre et al, 2000;Lane, 2002;Godfrey et al, 2007;Dunwell et al, 2008). Several lines of evidence suggest that GLPs are involved in general plant defense responses (Lane, 2002), including the observation that expression of certain GLPs is enhanced after infection with pathogens, feeding of insects, or application of chemicals such as salicylic acid, hydrogen peroxide (H 2 O 2 ), or ethylene (Dumas et al, 1995;Zhang et al, 1995;Wei et al, 1998;Zhou et al, 1998;Federico et al, 2006;Lou and Baldwin, 2006;Zimmermann et al, 2006;Godfrey et al, 2007).…”

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confidence: 99%

A Germin-Like Protein Gene Family Functions as a Complex Quantitative Trait Locus Conferring Broad-Spectrum Disease Resistance in Rice

et al. 2008

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Plant disease resistance governed by quantitative trait loci (QTL) is predicted to be effective against a broad spectrum of pathogens and long lasting. Use of these QTL to improve crop species, however, is hindered because the genes contributing to the trait are not known. Five disease resistance QTL that colocalized with defense response genes were accumulated by marker-aided selection to develop blast-resistant varieties. One advanced backcross line carrying the major-effect QTL on chromosome (chr) 8, which included a cluster of 12 germin-like protein (OsGLP) gene members, exhibited resistance to rice (Oryza sativa) blast disease over 14 cropping seasons. To determine if OsGLP members contribute to resistance and if the resistance was broad spectrum, a highly conserved portion of the OsGLP coding region was used as an RNA interference trigger to silence a few to all expressed chr 8 OsGLP family members. Challenge with two different fungal pathogens (causal agents of rice blast and sheath blight diseases) revealed that as more chr 8 OsGLP genes were suppressed, disease susceptibility of the plants increased. Of the 12 chr 8 OsGLPs, one clustered subfamily (OsGER4) contributed most to resistance. The similarities of sequence, gene organization, and roles in disease resistance of GLP family members in rice and other cereals, including barley (Hordeum vulgare) and wheat (Triticum aestivum), suggest that resistance contributed by the chr 8 OsGLP is a broad-spectrum, basal mechanism conserved among the Gramineae. Natural selection may have preserved a whole gene family to provide a stepwise, flexible defense response to pathogen invasion.

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confidence: 99%

A Germin-Like Protein Gene Family Functions as a Complex Quantitative Trait Locus Conferring Broad-Spectrum Disease Resistance in Rice

et al. 2008

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“…Germin-like oxalate oxidase therefore seems to fulfil some crucial functions in plants. In addition to these properties, recently it was suggested that germins and various other proteins which are involved in early plant development might belong to an evolutionarily ancient superfamily: cupin superfamily (Dunwell et al, 2000;2008).…”

Section: Resultsmentioning

confidence: 99%

The Roles of Germin Gene Products in Plants Under Salt Stress

Çalışkan¹

2011

Abiotic Stress Response in Plants - Physiological, Biochemical and Genetic Perspectives

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“…Germin-like proteins can bind carbohydrates such as cellulose to participate in cell wall modification, and, on the other hand, can prevent cell growth through negative (Dunwell et al 2008;Caliskan et al 2004), which can be cleared by SOD and CAT (Liu et al 2014a). Therefore, reducing SOD and CAT activities result in H 2 O 2 increase, which can decrease OSBP activity to reduce cells proliferation and can increase ABA level to activate the MAPK signaling pathway for cells differentiation (Wang et al 2005).…”

Section: Mapk Signaling Pathway In Callus Proliferation During the Camentioning

confidence: 99%

Signaling pathway in development of Camellia oleifera nurse seedling grafting union

Feng

Yang

Chen

et al. 2017

Trees

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Key message The anatomical and physiological signaling pathways associated with successful scion-rootstock union in nurse seedling grafting of Camellia oleifera propagation are illustrated. Abstract Grafting, the successful union between scion and rootstock, has practical and biological importance. Nurse seedling grafting, as those practiced for Camellia oleifera, often results in high cell division activity and affinity, and is usually associated with significant rootstock and scion anatomical structures changes. However, a comprehensive explanation of signaling pathways, and how they affect graft union development, is still largely unknown. The present study investigates the union formation process in C. oleifera nurse seedling grafts and determines that it consists of six stages, namely, isolation layer formation, rootstock callus differentiation, scion callus differentiation, callus proliferation and connection, cambium differentiation and connection, and conducting tissue differentiation and connection, extending over a period of 35 days. Principal components analyses of the observed changes in physiology and protein expression identified three main factors contributing to the union formation process: cell proliferation, cell differentiation, and vascular bundle development. Further analysis showed that the regulation of the union formation process can be divided into two signaling pathways, namely, calcium and MAPK, which occur during vascular bundle development and cell proliferation and differentiation, respectively.

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Germin and Germin-like Proteins: Evolution, Structure, and Function

Cited by 195 publications

References 340 publications

A Germin-Like Protein Gene Family Functions as a Complex Quantitative Trait Locus Conferring Broad-Spectrum Disease Resistance in Rice

A Germin-Like Protein Gene Family Functions as a Complex Quantitative Trait Locus Conferring Broad-Spectrum Disease Resistance in Rice

The Roles of Germin Gene Products in Plants Under Salt Stress

Signaling pathway in development of Camellia oleifera nurse seedling grafting union

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