Studies on the change of the pathogenicity of Gibberella lateritium (Nees) S. et H. by passing through the mulberry stems, and the pectic enzymes-production of the fungus

Takken MATUO; Nobuhiro SHIMIZU; Taketo TAKAGI; Eiji KUBOTA

doi:10.3186/jjphytopath.23.245

Studies on the change of the pathogenicity of Gibberella lateritium (Nees) S. et H. by passing through the mulberry stems, and the pectic enzymes-production of the fungus

Takken MATUO, Nobuhiro SHIMIZU, Taketo TAKAGI, Eiji KUBOTA

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JOURNAL FREE ACCESS

1958 Volume 23 Issue 5 Pages 245-250

DOI https://doi.org/10.3186/jjphytopath.23.245

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Published: December 30, 1958 Received: November 15, 1958 Available on J-STAGE: February 19, 2009 Accepted: - Advance online publication: - Revised: -
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Date of correction: February 19, 2009 Reason for correction: - Correction: DTRECEIVED Details: Right : 19581115

Date of correction: February 19, 2009 Reason for correction: - Correction: TITLE Details: Wrong : Studies on the change of the pathogenicity of Gibberella lateritium (Nees) S. et H. by passing through the mulberry stems, and the pectic enzymes-production of the fungus
Right : Studies on the change of the pathogenicity of Gibberella lateritium (Nees) S. et H. by passing through the mulberry stems, and the pectic enzymes-production of the fungus

Date of correction: February 19, 2009 Reason for correction: - Correction: ABSTRACT Details: Wrong : This paper deals with the change of the pathogenicity of Gibberella lateritium (Nees) Snyder et Hansen by passing through mulberry stems, and on the pectic enzymes-production of the fungus mycelium.
1) Generally, this fungus enters the mulberry stem through the injuries of stem surface in autumn and develops little by little during the dormant season. 45 mulberry stems (9 mulberry stems, 5 times) were used for comparing the pathogenicity of 3 strains of the fungus. The inoculation places of the 3 strains on mulberry stems were determined following the Latin square arrangement as shown in Fig. 1. The pathogenicity of the strains was represented approximately measuring area of lesions (average values of products of length (mm) and width (mm) of lesions). In order to compare the pathogenicity of strains between different inoculation groups, strain No. 1 was used as a check in every inoculation group, because of the relatively invariable pathogenicity of strain No. 1.
2) Some strains of Gibberella lateritium increased the pathogenicity clearly by passing through the living mulberry stem, but not the others.
3) The increase in pathogenicity of the causal fungus by passing through the mulberry stem did not reduce completely by culturing the fungus on potato decoction agar for about 12 months. However, the fungus did not increase their pathogenicity additionally by passing twice through living mulberry tree.
4) The pectinase-production of this fungus strains in culture solution (modified glucose-asparagine culture solution) did not parallel the pathogenicity, but the pectase-production (the amount per mg of hyphae) ran parallel with the pathogenicity.
Right : This paper deals with the change of the pathogenicity of Gibberella lateritium (Nees) Snyder et Hansen by passing through mulberry stems, and on the pectic enzymes-production of the fungus mycelium.
1) Generally, this fungus enters the mulberry stem through the injuries of stem surface in autumn and develops little by little during the dormant season. 45 mulberry stems (9 mulberry stems, 5 times) were used for comparing the pathogenicity of 3 strains of the fungus. The inoculation places of the 3 strains on mulberry stems were determined following the Latin square arrangement as shown in Fig. 1. The pathogenicity of the strains was represented approximately measuring area of lesions (average values of products of length (mm) and width (mm) of lesions). In order to compare the pathogenicity of strains between different inoculation groups, strain No. 1 was used as a check in every inoculation group, because of the relatively invariable pathogenicity of strain No. 1.
2) Some strains of Gibberella lateritium increased the pathogenicity clearly by passing through the living mulberry stem, but not the others.
3) The increase in pathogenicity of the causal fungus by passing through the mulberry stem did not reduce completely by culturing the fungus on potato decoction agar for about 12 months. However, the fungus did not increase their pathogeni-city additionally by passing twice through living mulberry tree.
4) The pectinase-production of this fungus strains in culture solution (modified glucose-aspara-gine culture solution) did not parallel the pathogenicity, but the pectase-production (the amount per mg of hyphae) ran parallel with the pathogenicity.

Date of correction: February 19, 2009 Reason for correction: - Correction: AUTHOR Details: Wrong : Takken MATUO, Nobuhiro SHIMIZU, Taketo TAKAGI, Eiji KUBOTA¹⁾
Right : Takken MATUO¹⁾, Nobuhiro SHIMIZU¹⁾, Taketo TAKAGI¹⁾, Eiji KUBOTA¹⁾

Date of correction: February 19, 2009 Reason for correction: - Correction: CITATION Details: Wrong : 3) De Bruyn, H. L. G.: Phytopath. Zeitschr., 18: 339-359. (1952).
4) Gäumann, E., Stoll, C. & Kern, H.: Phytopath. Zeitschr., 20: 345-347. (1953).
5) Gothoskar, S. S., Scheffer, R. P., Walker, J. C. & Stahmann, M. A.: Phytopath., 43: 535-536. (1953).
6) Gothoskar, S. S., Scheffer, R. P., Stahmann, M. A. & Walker, J. C.: Phytopath., 45: 303-306. (1955).
7) Gothoskar, S. S., Scheffer R. P.., Walker, J. C. & Stahmann, M. A.: Phytopath., 45: 381-387. (1955).
11) Matuo, T.: Jour. Fac. Text. Seric. Shinshu Univ. 1, Ser. A.: 45-81. (1951).
12) Matuo, T.: Jour. Fac. Text. Seric. Shinshu Univ. 2, Ser. A: 1-43. (1952).
16) Mills, W. R. & Peterson, C. L. C.: Amer. Potato Jour., 26: 98. (1949).
17) Pierson, C. F., Gothoskar, S. S., Walker, J. C. & Stahmann, M. A.: Phytopath., 45: 524-527. (1955).
18) Reddick, D. & Mills, W. R.: Amer. Potato Jour., 15: 29-34. (1938).
19) Scheffer, R. P. & Walker, J. C.: Phytopath., 43: 116-125. (1953).
22) Waggoner, P. E. & Dimond, A. E.: Phytopath., 45: 79-87. (1955).
23) Winstead, N. N. & Walker, J. C.: Phytopath., 44: 153-158. (1954).
24) Wood, R.K.S.: Mech. Microb. Pathogenicity (edited by Howie, J. W. & O'hea, A. J.): 263-293. (1955).

Right : 3) De Bruyn, H.L.G.: Phytopath. Zeitschr., 18: 339-359.(1952).
4) Gäumann, E., Stoll, C. & Kern, H.: Phytopath. Zeitschr., 20: 345-347.(1953).
5) Gothoskar, S.S., Scheffer, R.P., Walker, J.C. & Stahmann, M.A.: Phytopath., 43: 535-536.(1953).
6) Gothoskar, S.S., Scheffer, R.P., Stahmann, M.A. & Walker, J.C.: Phytopath., 45: 303-306.(1955).
7) Gothoskar, S.S., Scheffer R.P., Walker, J.C. & Stahmann, M.A.: Phytopath., 45: 381-387.(1955).
11) Matuo, T.: Jour. Fac. Text. Seric. Shinshu Univ. 1, Ser. A.: 45-81.(1951).
12) Matuo, T.: Jour. Fac. Text. Seric. Shinshu Univ. 2, Ser. A: 1-43.(1952).
16) Mills, W.R. & Peterson, C.L.C.: Amer. Potato Jour., 26: 98.(1949).
17) Pierson, C.F., Gothoskar, S.S., Walker, J. C. & Stahmann, M.A.: Phytopath., 45: 524-527.(1955).
18) Reddick, D. & Mills, W.R.: Amer. Potato Jour., 15: 29-34.(1938).
19) Scheffer, R.P. & Walker, J.C.: Phytopath., 43: 116-125.(1953).
22) Waggoner, P.E. & Dimond, A.E.: Phytopath., 45: 79-87.(1955).
23) Winstead, N.N. & Walker, J.C.: Phytopath., 44: 153-158.(1954).
24) Wood, R.K.S.: Mech. Microb. Pathogenicity (edited by Howie, J.W. & O'hea, A. J.): 263-293.(1955).

Date of correction: February 19, 2009 Reason for correction: - Correction: PDF FILE Details: -

Abstract

This paper deals with the change of the pathogenicity of Gibberella lateritium (Nees) Snyder et Hansen by passing through mulberry stems, and on the pectic enzymes-production of the fungus mycelium.
1) Generally, this fungus enters the mulberry stem through the injuries of stem surface in autumn and develops little by little during the dormant season. 45 mulberry stems (9 mulberry stems, 5 times) were used for comparing the pathogenicity of 3 strains of the fungus. The inoculation places of the 3 strains on mulberry stems were determined following the Latin square arrangement as shown in Fig. 1. The pathogenicity of the strains was represented approximately measuring area of lesions (average values of products of length (mm) and width (mm) of lesions). In order to compare the pathogenicity of strains between different inoculation groups, strain No. 1 was used as a check in every inoculation group, because of the relatively invariable pathogenicity of strain No. 1.
2) Some strains of Gibberella lateritium increased the pathogenicity clearly by passing through the living mulberry stem, but not the others.
3) The increase in pathogenicity of the causal fungus by passing through the mulberry stem did not reduce completely by culturing the fungus on potato decoction agar for about 12 months. However, the fungus did not increase their pathogeni-city additionally by passing twice through living mulberry tree.
4) The pectinase-production of this fungus strains in culture solution (modified glucose-aspara-gine culture solution) did not parallel the pathogenicity, but the pectase-production (the amount per mg of hyphae) ran parallel with the pathogenicity.

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