β-Glucanases in Higher Plants: Localization, Potential Functions, and Regulation

Verma, Desh Pal S.; Kumar, Vishnu; Maclachlan, Gordon

doi:10.1007/978-1-4684-1116-4_22

Cited by 8 publications

(1 citation statement)

References 152 publications

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“…A more likely possibility is that the plant has a mechanism to inactivate excess cellulase as a means of regulating nodulation. This process is thought to be invoked after infection, possibly to facilitate bacteroid release [8,26], and it may account for the low levels of cellulase activity that were detected in nodules containing the Cel ÷ bacteria.…”

Section: The Cellulase-encoding Plasmid Is Retained During Nodulationmentioning

confidence: 99%

A cloned cellulase gene from Erwinia carotovora subsp. carotovora is expressed in Rhizobium fredii but does not influence nodulation of cowpea

Krishnan¹

1994

FEMS Microbiology Letters

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Symbiotic rhizobia enter roots of their hosts via infection threads in root-hairs and invade the cortex, where nodules are initiated. We have transferred a cloned cellulase (Cel) gene from Erwinia carotovora subsp, carotouora into rhizobia and examined both the production of the enzyme and its impact on nodulation. Acquisition of a Cel + plasmid allowed cultured cells of Rhizobium fredii, R. meliloti, and R. tropici to produce extracellular enzymes that degrade carboxymethylcellulose. The Cel + plasmid was retained by R. fredii during nodulation of cowpea, and analysis of a gene fusion confirmed that the Cel promoter was active in planta. Cellulase levels in nodules nevertheless were low, and infection and nodulation were unaffected by the presence of the Cel + plasmid.

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Section: The Cellulase-encoding Plasmid Is Retained During Nodulationmentioning

confidence: 99%

A cloned cellulase gene from Erwinia carotovora subsp. carotovora is expressed in Rhizobium fredii but does not influence nodulation of cowpea

Krishnan¹

1994

FEMS Microbiology Letters

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Defense Responses of Plants

Ryan

1984

Genes Involved in Microbe-Plant Interactions

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Cell Cycle Alteration and β-1,4 Endoglucanase in Heterotrophic Chlorella vulgaris UAM 101

Martínez

Orus

1991

Journal of Plant Physiology

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β-Glucanases in Higher Plants: Localization, Potential Functions, and Regulation

Cited by 8 publications

References 152 publications

A cloned cellulase gene from Erwinia carotovora subsp. carotovora is expressed in Rhizobium fredii but does not influence nodulation of cowpea

A cloned cellulase gene from Erwinia carotovora subsp. carotovora is expressed in Rhizobium fredii but does not influence nodulation of cowpea

Defense Responses of Plants

Cell Cycle Alteration and β-1,4 Endoglucanase in Heterotrophic Chlorella vulgaris UAM 101

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