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Acetate Is A Chemoattractant For The Colonial Green Alga Astrephomene Gubernaculifera (chlorophyceae) by Harold J. Hoops; Amy E. Cocina; David S. Binder; Armand Widjaja is a Earth and Planetary Sciences article available to read on EtoBox.

What is Acetate Is A Chemoattractant For The Colonial Green Alga Astrephomene Gubernaculifera (chlorophyceae) about?

__Astrephomene gubernaculifera__ Pocock is capable of growth on sodium acetate, even in the absence of light. From an evolutionary standpoint, it would be beneficial for this motile heterotrophic organism to be able to sense and swim to such an energy source. We used three assays to test for chemoattraction of __A. gubernaculifera.__ In each case, there was strong chemoattraction to acetate. Propionate, a molecule structurally similar to acetate, also elicited a strong chemoattraction response, even though it was incapable of supporting growth in the dark in this strain. This implies that chemoattraction in __A. gubernaculifera__ is based on a receptor‐mediated signaling response. Video analysis of colonies exhibiting the attraction response indicated that most of them remained motile in the vicinity of the acetate. This rules out the simplest possible model for accumulation in which colonies stop when they encounter increased acetate concentrations. We also tested a variety of other organic molecules for their ability to chemoattract __A. gubernaculifera.__ Of the 11 sugars, 18 amino acids, and three other organic molecules tested, only the amino acid phenylalanine elicited chemoa

Who reads Acetate Is A Chemoattractant For The Colonial Green Alga Astrephomene Gubernaculifera (chlorophyceae)?

Author

Harold J. Hoops; Amy E. Cocina; David S. Binder; Armand Widjaja

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0022-3646)

Published

2002

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)