Inoculum sources of Botryosphaeriaceae species in New Zealand grapevine nurseries

2012 ◽  
Vol 135 (1) ◽  
pp. 159-174 ◽  
Author(s):  
R. Billones-Baaijens ◽  
H. J. Ridgway ◽  
E. E. Jones ◽  
M. V. Jaspers
Keyword(s):  
New Zealand ◽  
Inoculum Sources ◽  
Botryosphaeriaceae Species

Botryosphaeriaceae species associated with blueberry dieback and sources of primary inoculum in propagation nurseries in New Zealand

2017 ◽  
Vol 150 (2) ◽  
pp. 363-374 ◽  
Author(s):  
K. M. S. Tennakoon ◽  
Hayley J. Ridgway ◽  
Marlene V. Jaspers ◽  
E. Eirian Jones
Keyword(s):  
New Zealand ◽  
Primary Inoculum ◽  
Botryosphaeriaceae Species

Grape tendrils as an inoculum source of Botrytis cinerea in vineyards a review

2012 ◽  
Vol 65 ◽  
pp. 218-227 ◽  
Author(s):  
D.C. Mundy ◽  
R.H. Agnew ◽  
P.N. Wood
Keyword(s):  
New Zealand ◽  
Botrytis Cinerea ◽  
Wine Industry ◽  
Inoculum Sources ◽  
Inoculum Source ◽  
Major Disease ◽  
Wide Range ◽  
Bunch Rot ◽  
Considerable Damage

Botrytis cinerea is a fungus responsible for considerable damage to a wide range of crops worldwide including grapes Botrytis bunch rot caused by B cinerea is the major disease problem that must be managed by the New Zealand wine industry each season However the fungus is not easily managed as it can be both necrotrophic and saprophytic with a range of overwintering inoculum sources New Zealand grape growers have asked whether it is necessary to remove tendrils at the time of pruning in order to minimise botrytis bunch rot infection at harvest This review provides a summary of the information currently available on the importance of tendrils in the epidemiology of botrytis bunch rot under New Zealand conditions Gaps in knowledge and areas for further investigation are also identified

scholarly journals Conidial production by Botryosphaeriaceae species from grapevine shoot lesions in Marlborough vineyards

2017 ◽  
Vol 70 ◽  
pp. 295-300 ◽  
Author(s):  
A. Shafi ◽  
H.J. Ridgway ◽  
M.V. Jaspers ◽  
E.E. Jones
Keyword(s):  
New Zealand ◽  
Environmental Conditions ◽  
Microscopic Observation ◽  
Dna Analysis ◽  
Sauvignon Blanc ◽  
Conidial Production ◽  
Air Temperatures ◽  
Botryosphaeriaceae Species

Botryosphaeriaceae species are important pathogens of grapevines so the effect of environmental conditions on sporulation from naturally infected Sauvignon blanc grapevines in two Marlborough vineyards was studied. Shoot lesions characteristic of Botryosphaeriaceae infection were marked on 24 grapevines in each vineyard for observation between September 2014 and April 2015. Pycnidia on the lesions oozed conidia during or soon after rainfall on five occasions at maximum air temperatures of 8.4—19.9˚C and relative humidities of 77—94.7%. Microscopic observation of the ooze showed conidia characteristic of either Neofusicoccum or Diplodia species in 67% and 50% of samples from Vineyard A and B, respectively. Sixty- nine colonies characteristic of Botryosphaeriaeae species were recovered after plating of conidial ooze and identified by DNA analysis as Diplodia mutila (39.1%), Neofusicoccum australe (30.4%), N. parvum (14.5%), N. luteum (5.8%), D. seriata (7.2%) and N. ribis (3.0%). All species have been reported previously as grapevine pathogens in New Zealand.

Infection criteria, inoculum sources and splash dispersal pattern of Colletotrichum acutatum causing bitter rot of apple in New Zealand

2018 ◽  
Vol 152 (2) ◽  
pp. 367-383 ◽  
Author(s):  
K. R. Everett ◽  
I. P. S. Pushparajah ◽  
O. E. Timudo ◽  
A. Ah Chee ◽  
R. W. A. Scheper ◽  
...  
Keyword(s):  
New Zealand ◽  
Colletotrichum Acutatum ◽  
Dispersal Pattern ◽  
Inoculum Sources ◽  
Bitter Rot ◽  
Splash Dispersal

Prevalence and distribution of Botryosphaeriaceae species in New Zealand grapevine nurseries

2012 ◽  
Vol 135 (1) ◽  
pp. 175-185 ◽  
Author(s):  
R. Billones-Baaijens ◽  
H. J. Ridgway ◽  
E. E. Jones ◽  
R. H. Cruickshank ◽  
M. V. Jaspers
Keyword(s):  
New Zealand ◽  
Botryosphaeriaceae Species

scholarly journals Preliminary investigations of the risk of plant debris as a Pseudomonas syringae pv actinidiae inoculum source

2016 ◽  
Vol 69 ◽  
pp. 11-16
Author(s):  
J.L. Tyson ◽  
C.L. Curtis ◽  
M.A. Manning ◽  
S.J. Dobson ◽  
C.E. McKenna
Keyword(s):  
New Zealand ◽  
Pseudomonas Syringae ◽  
Causal Agent ◽  
Plant Debris ◽  
Inoculum Sources ◽  
Inoculum Source ◽  
Trap Plants ◽  
Fallen Leaves ◽  
Rain Events

In New Zealand the causal agent of kiwifruit canker Pseudomonas syringae pv actinidiae (Psa) can survive in overwintered kiwifruit plant debris on the orchard floor at least until spring This study used trap plates and trap plants to determine the importance of fallen leaves and winter prunings on the orchard floor as inoculum sources Trap plates were positioned 15 50 and 100 cm above the debris Psa was detected only when the plates were exposed during rain events and was found to be splashed upwards in small amounts from the debris during rain Leaf lesions developed only on the trap plants exposed during the first week of the 20week trial In this trial there is some evidence that plant debris is not a significant inoculum source and would not have posed a major risk for reinfection of any surrounding kiwifruit vines at the time of budburst in spring

Magellanic Cloud Eclipsing Binaries: Primary Distance Indicators

1999 ◽  
Vol 190 ◽  
pp. 563-566
Author(s):  
J. D. Pritchard ◽  
W. Tobin ◽  
J. V. Clausen ◽  
E. F. Guinan ◽  
E. L. Fitzpatrick ◽  
...  
Keyword(s):  
New Zealand ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Parameters ◽  
Distance Indicators

Our collaboration involves groups in Denmark, the U.S.A. Spain and of course New Zealand. Combining ground-based and satellite (IUEandHST) observations we aim to determine accurate and precise stellar fundamental parameters for the components of Magellanic Cloud Eclipsing Binaries as well as the distances to these systems and hence the parent galaxies themselves. This poster presents our latest progress.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

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