Knowledge (XXG)

Psyllid yellows

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102:. The symptoms are a marked yellowing of the leaves, an upright appearance to the leaves, with severe cases resulting in early death of the plant. Tuber initiation and growth is affected. Many small tubers are formed, frequently misshaped. In some cases, the tubers seem to have lost sprouting inhibition and have begun sprouting before harvest. At later stages, the tubers sprout weakly, if at all. 112:
A very similar disease has been described in tomatoes. In addition to the foliar symptoms, mature fruit is very much smaller, tends to have a pointy end, and frequently they occur in larger clusters of fruit than normal. In severe cases, the yellowing progresses to plant death. In addition to psyllid
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Symptoms in capsicum plants: Include pale green or yellow leaves with spiky tips. Leaves may be misshapen. Leaf stalks may be misshapen, leaf stalks appear short, flowers may drop prematurely and parts of the plant may die back. Symptoms may vary in severity between
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Symptoms in tomato plants: Include leaf curling and yellowing stunting of the plant, fruit occasionally misshapen with a strawberry like appearance. The leaf axial or stalk may also become very long and the fruit development may be
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Symptoms in potato tops can include these being smaller than normal, yellowing and the tops can develop a scorched appearance before premature collapse.
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causes these symptoms. If pest control occurs at an early stage of the disease, the plants appear to be able to recover.
289: 284: 36: 98: 58: 203:"'Candidatus Liberibacter solanacearum', a liberibacter associated with plants in the family Solanaceae" 179: 155:
Liberibacter solanacearum' has been reported from Zebra Chip potatoes in both Texas and New Zealand.
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A summary of symptoms from plants in New Zealand with photos of tomato and capsicum plants:
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This same Liberibacter has recently been found in potatoes in New Zealand and in the US.
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crops show a similar fruit effect, but generally with no, or very little, foliar symptom.
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Candidatus Liberibacter spp. as putative causal agent of Zebra Chip of potatoes
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Liberibacter solanacearum' has been associated with this disease.
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L. Liefting; B. S. Weir; S. R. Pennycook; G. R. G. Clover (2009).
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International Journal of Systematic and Evolutionary Microbiology
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It is thought that a toxin produced by the nymph stage of the
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Candidatus Liberibacter spp bacterium detected in new host
176:"New bacterium affects fresh tomatoes and capsicums" 75: 65: 53: 43: 26: 21: 178:. MAF Biosecurity New Zealand. Archived from 8: 220: 164: 280:Bacterial plant pathogens and diseases 18: 170: 168: 113:feeding, a new species of bacterium ' 7: 14: 92:infested by the potato/tomato 1: 145:The potato disorder/disease " 306: 37:Liberibacter solanacearum 16:Plant disease in potatoes 222:10.1099/ijs.0.007377-0 149:" is related in that ' 99:Bactericera cockerelli 59:Bactericera cockerelli 249:2008-08-29 at the 83: 82: 297: 264: 259: 253: 241: 235: 234: 224: 215:(Pt 9): 2274–6. 198: 192: 191: 189: 187: 172: 88:is a disease of 19: 305: 304: 300: 299: 298: 296: 295: 294: 290:Candidatus taxa 285:Potato diseases 270: 269: 268: 267: 260: 256: 251:Wayback Machine 242: 238: 200: 199: 195: 185: 183: 174: 173: 166: 161: 86:Psyllid yellows 22:Psyllid yellows 17: 12: 11: 5: 303: 301: 293: 292: 287: 282: 272: 271: 266: 265: 254: 236: 193: 182:on 13 May 2010 163: 162: 160: 157: 140: 139: 136: 132: 81: 80: 77: 73: 72: 69: 63: 62: 55: 51: 50: 45: 41: 40: 28: 24: 23: 15: 13: 10: 9: 6: 4: 3: 2: 302: 291: 288: 286: 283: 281: 278: 277: 275: 263: 258: 255: 252: 248: 245: 240: 237: 232: 228: 223: 218: 214: 210: 209: 204: 197: 194: 181: 177: 171: 169: 165: 158: 156: 154: 153: 148: 143: 137: 133: 129: 128: 127: 124: 122: 118: 117: 110: 108: 103: 101: 100: 95: 91: 87: 78: 74: 70: 68: 64: 61: 60: 56: 52: 49: 46: 42: 39: 38: 34: 33: 29: 27:Causal agents 25: 20: 257: 239: 212: 206: 196: 184:. Retrieved 180:the original 150: 144: 141: 125: 114: 111: 104: 97: 85: 84: 76:Distribution 57: 35: 30: 79:New Zealand 274:Categories 159:References 152:Candidatus 147:Zebra chip 135:varieties. 116:Candidatus 32:Candidatus 186:2 January 67:EPPO Code 247:Archived 231:19620372 121:Capsicum 90:potatoes 131:uneven. 107:psyllid 94:psyllid 54:Vectors 229:  71:LIBEPS 48:Potato 44:Hosts 227:PMID 188:2009 217:doi 276:: 225:. 213:59 211:. 205:. 167:^ 96:, 233:. 219:: 190:.

Index

Candidatus
Liberibacter solanacearum
Potato
Bactericera cockerelli
EPPO Code
potatoes
psyllid
Bactericera cockerelli
psyllid
Candidatus
Capsicum
Zebra chip
Candidatus


"New bacterium affects fresh tomatoes and capsicums"
the original
"'Candidatus Liberibacter solanacearum', a liberibacter associated with plants in the family Solanaceae"
International Journal of Systematic and Evolutionary Microbiology
doi
10.1099/ijs.0.007377-0
PMID
19620372
Candidatus Liberibacter spp bacterium detected in new host
Archived
Wayback Machine
Candidatus Liberibacter spp. as putative causal agent of Zebra Chip of potatoes
Categories
Bacterial plant pathogens and diseases
Potato diseases

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