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A Model for Fungal Colony Growth Applied to Sclerotium rolfsii

Leah Edelstein, Yitzhak Hadar, I. Chet, Y. Henis, Lee A. Segel

Open publisher page 36 citations

Abstract

A model which relates branching kinetics to colony shape in filamentous fungi was used to study the growth of Sclerotium rolfsii. Model variables include the densities of hyphae and tips along the radius of the colony. Experiments designed to measure these variables revealed peaked distributions of hyphae, and tip densities which were concentrated just within the margin of the colony. The phenomena of lateral branching, hyphal autolysis, and anastomosis, which are known to occur in S. rolfsii, are incorporated into the model. Predictions generated by the model agree with experimental observations on this species.

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What this paper is about

A model which relates branching kinetics to colony shape in filamentous fungi was used to study the growth of Sclerotium rolfsii. Model variables include the densities of hyphae and tips along the radius of the colony. Experiments designed to measure these variables revealed peaked distributions of hyphae, and tip densities which were concentrated just within the margin of the colony. The phenomena of lateral branching, hyphal autolysis, and anastomosis, which are known to occur in S. rolfsii, are incorporated into the model. Predictions generated by the model agree with experimental observations on this species.

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Available abstract

A model which relates branching kinetics to colony shape in filamentous fungi was used to study the growth of Sclerotium rolfsii. Model variables include the densities of hyphae and tips along the radius of the colony. Experiments designed to measure these variables revealed peaked distributions of hyphae, and tip densities which were concentrated just within the margin of the colony. The phenomena of lateral branching, hyphal autolysis, and anastomosis, which are known to occur in S. rolfsii, are incorporated into the model. Predictions generated by the model agree with experimental observations on this species.

Key concepts: Sclerotium, Hypha, Autolysis (biology), Biology, Botany, Biochemistry, Enzyme

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