000			01551nab a22002417a 4500
001			G97343
003			MX-TxCIM
005			20170719155452.0
008			121211b |||p||p||||||| |z||| |
040			_aMX-TxCIM
041	0		_aEn
100	1		_aFarquhar, M.L.
245	0	0	_aPathogenesis in fusarium root rot of primary roots of Pinus resinosa grown in test tubes
260			_c1989
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0706-0661
520			_aLight microscopy and transmission electron microscopy were used to document penetration and establishment of infection with Fusarium oxysporum f.sp. pini of primary roots of Pinus resinosa seedlings grown in test tubes. The initial infection sites were in the meristematic region, and hyphae penetrated both inter-and intracellularly through the root cap and epidermis into subjacent tissues. Intracellular penetration was facilitated by an appressorium-like expansion of the hypha before development of the penetration peg. Penetration appeared to be a result of combined enzymatic degradation and mechanical pressure on the host cell wall. Wall appositions and osmiophilic materials, which might be barriers to colonization by this fungus under less optimal environmental conditions, were observed infrequently.
546			_aEnglish
593			_aCarelia Juarez
595			_aRPC
700	1		_aPeterson, R.L., _ecoaut.
773	0		_tCanadian Journal of Plant Pathology _gv. 11, no. 3, p. 221-228
942			_cJA
999			_c29621 _d29621