Plants accumulate carbohydrates such as starch and fructans
as storage substances that can be mobilized during
periods of limited energy supply or enhanced energetic
demands. While most plant species use starch as their main
storage carbohydrate, several angiosperms, mainly from
regions with seasonal cold and dry periods, accumulate
fructans. Accumulation of fructans might
be advantageous, due to their high water solubility, their
resistance to crystallization at freezing temperatures, and
the fact that fructan synthesis functions normally under
low temperatures. Furthermore, fructans can stabilize membranes and might
indirectly contribute to osmotic adjustment upon freezing
and dehydration by the release of hexose sugars.
Plants accumulate carbohydrates such as starch and fructansas storage substances that can be mobilized duringperiods of limited energy supply or enhanced energeticdemands. While most plant species use starch as their mainstorage carbohydrate, several angiosperms, mainly fromregions with seasonal cold and dry periods, accumulatefructans. Accumulation of fructans mightbe advantageous, due to their high water solubility, theirresistance to crystallization at freezing temperatures, andthe fact that fructan synthesis functions normally underlow temperatures. Furthermore, fructans can stabilize membranes and mightindirectly contribute to osmotic adjustment upon freezingand dehydration by the release of hexose sugars.
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พืชสะสมคาร์โบไฮเดรตเช่นแป้งและย่อย Plants accumulate carbohydrates such as starch and fructans
เป็นสารที่จัดเก็บข้อมูลที่สามารถระดมในช่วงระยะเวลาของการจัดหาพลังงาน จำกัด หรือเพิ่มพลังความต้องการ as storage substances that can be mobilized during
periods of limited energy supply or enhanced energetic
demands. While most plant species use starch as their main
storage carbohydrate, several angiosperms, mainly from
regions with seasonal cold and dry periods, accumulate
fructans. Accumulation of fructans might
be advantageous, due to their high water solubility, their
resistance to crystallization at freezing temperatures, and
the fact that fructan synthesis functions normally under
low temperatures. Furthermore, fructans can stabilize membranes and might
indirectly contribute to osmotic adjustment upon freezing
and dehydration by the release of hexose sugars.
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