New Zealand Journal of Botany abstracts

---

INFECTION OF PINUS RADIATA NEEDLES BY DOTHISTROMA PINI

P. D. Gadgil

Forest Research Institute, Rotorua

Abstract Seedlings of Pinus radiata were sprayed with conidial suspensions of Dothi-strnma pini under controlled conditions. Germination of conidia was virtually complete within 48 hours. The mycelium grew on the needie surface for 7-10 days and produced secondary conidia before entering the needle tissues through stomata. Hyphae grew inter- and intra-cellularly and caused disruption of the mesophyll cells. Hulbary's (1941) observations on stromatal development were confirmed. Stromata of D. pini appeared on the needle surface 3^-4 months after inoculation. Some evidence of exotoxin or exo-enzyme production by D. pini hyphae was obtained.

N.Z. Jl Bot. 5: 498-503.
(Received for publication 1 March 1967)

PDF file of entire paper: medium quality (689K); (scanned from paper original: notes about this process)

---

This year's abstracts | Journal home page | All abstracts | Publishing home page