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Re: Bubbles on plants
Most, if not all, aquatic plants possess extensive air channels or
lacunae which are sometimes called aerenchyma. For those vanishingly few
who are interested, aerenchyma are either lysigenous or schizogenous in
origin. Many of these air channels are directly connected to the external
aquatic environment through structures called hydropoten. The
hydropoten are generally found at the tips of submerged leaves. Often, the
bubbles that you see streaming from aquatic plants are being released
from these hydropoten. This is an indication that the lacunar system is
pressurized by O2 formed during photosynthesis.
dave h.