フィロデンドロンの花束による温度調節

K A Nagy, D K Odell, R S Seymour

Science (New York, N.Y.)

|December 15, 1972

まとめ

フィロデンドロン・セルラムの花束は,かなりの熱を発生し,涼しい天候では46°Cまで温度を維持します. この熱生成は,高代謝率の不妊の雄性花によって促進され,ハミングバードと似ています.

科学分野:

植物学植物学
植物生理学植物生理学
熱生成とは,熱生成である.

背景:

植物熱調節は珍しい現象である.
フィロデンドロンの種は,ユニークな生殖戦略で知られている.

研究の目的:

フィロデンドロン・セラムの花束の温度調節メカニズムを調査するために.
熱生成を定量化し,熱生成の源を特定する.

主な方法:

周りの気温の範囲で花束のコア温度を監視する.
花の組織の酸素消費率を測定する.
滅菌した雄の花の代謝活動を分析する.

主要な成果:

フィロデンドロン・セラムの花束は,コア温度を38°Cから46°Cの間で維持した.
4°Cから39°Cまでの環境温度にもかかわらず,著しい熱生成が観察されました.
滅菌した雄の花は,活発な昆虫と比べ,高い酸素消費率を示した.

結論:

フィロデンドロン・セルラムは,熱調節のために変数代謝率を使用しています.
特殊な不妊の雄性花が熱生成の主な源である.
このメカニズムは,受粉者を惹きつけ,花粉の放出を促進する可能性がある.

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