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  1. #1
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    Default Novel Middle-Type Kenyon Cells in the Honeybee Brain Revealed by Area-Preferential Ge

    Novel Middle-Type Kenyon Cells in the Honeybee Brain Revealed by Area-Preferential Gene Expression Analysis
    The mushroom bodies (a higher center) of the honeybee (Apis mellifera L) brain were considered to comprise three types of intrinsic neurons, including large- and small-type Kenyon cells that have distinct gene expression profiles. Although previous neural activity mapping using the immediate early gene kakusei suggested that small-type Kenyon cells are mainly active in forager brains, the precise Kenyon cell types that are active in the forager brain remain to be elucidated. We searched for novel gene(s) that are expressed in an area-preferential manner in the honeybee brain. By identifying and analyzing expression of a gene that we termed mKast (middle-type Kenyon cell-preferential arrestin-related protein), we discovered novel ‘middle-type Kenyon cells’ that are sandwiched between large- and small-type Kenyon cells and have a gene expression profile almost complementary to those of large– and small-type Kenyon cells. Expression analysis of kakusei revealed that both small-type Kenyon cells and some middle-type Kenyon cells are active in the forager brains, suggesting their possible involvement in information processing during the foraging flight. mKast expression began after the differentiation of small- and large-type Kenyon cells during metamorphosis, suggesting that middle-type Kenyon cells differentiate by modifying some characteristics of large– and/or small-type Kenyon cells. Interestingly, CaMKII and mKast, marker genes for large– and middle-type Kenyon cells, respectively, were preferentially expressed in a distinct set of optic lobe (a visual center) neurons. Our findings suggested that it is not simply the Kenyon cell-preferential gene expression profiles, rather, a ‘clustering’ of neurons with similar gene expression profiles as particular Kenyon cell types that characterize the honeybee mushroom body structure.
    http://www.plosone.org/article/info%...l.pone.0071732
    americasbeekeeper.com
    beekeeper@americasbeekeeper.com

  2. #2
    Join Date
    Apr 2011
    Location
    lee county, fl, usa
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    906

    Default Re: Novel Middle-Type Kenyon Cells in the Honeybee Brain Revealed by Area-Preferentia

    Can you summarize that in layman's terms?
    Pleasant words are a honeycomb, sweet to the soul and healing to the bones. Prvb 16:24
    March 2010; +/- 30 hives, TF

  3. #3
    Join Date
    Dec 2010
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    helenwood,tn.usa
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    121

    Default Re: Novel Middle-Type Kenyon Cells in the Honeybee Brain Revealed by Area-Preferentia

    yea whats the point?
    beekeeping about 15 years. Warning i could be an idiot. I'm from South Jersey.

  4. #4
    Join Date
    Jan 2010
    Location
    Alachua County, FL, USA
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    7,107

    Default Re: Novel Middle-Type Kenyon Cells in the Honeybee Brain Revealed by Area-Preferentia

    Entomologists with smart brains found a third type of bee brain cell. The middle-type brain cell are important to faraging bees. Middle-Type Kenyon Cells
    americasbeekeeper.com
    beekeeper@americasbeekeeper.com

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