sporoninn.
/ˈspɒrənɪn/ Biochemistry.
An inert substance forming the resistant outer covering of spores. Cf. sporopollenin n.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > type of > microspore or microsporange > substance forming outer coating
sporonin1928
sporopollenin1931
1928 Chem. Abstr. 22 2949 This, after prolonged digestion with HCl, followed by boiling with 5% alkali, affords a new brownish yellow substance, sporonin, (C10H16O3)x.
1964 Grana Palynologica V. 247 According to Zetsche the membranes consisted of cellulose and a specific substance called sporonin, or pollenin if derived from pollen, which was responsible for the chemical stability of the membranes.
1974 Stanley & Linskens Pollen ix. 138 Because of the similarity of spore wall sporonin to pollen wall pollenin they [sc. Zetsche et al.] subsequently used the word ‘sporopollenin’.
This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).
<
n.1928