David B. Langston's Images
Title: Associate ProfessorOrganization: University of Georgia
Unit: Plant Pathology
Country: United States
| 19 Images of 12 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 5077017 | black rot of crucifers | Xanthomonas campestris pv. campestris | Initial infection begins as yellow "V" shaped spot on edge of leaf. Black veins eventually appear as infection spreads. |
| 5077019 | Cabbage Leaf Curl Virus | Geminivirus CaLCuV | Bud appears distorted and puckered. Growing point ceases development. May or may not return to normal growth. |
| 5077020 | bacterial black stalk | Erwinia spp. | stem will collapse at base of head. Has strong putrid odor in latter stages. Plant and head appear wilted in initial stages. |
| 5077036 | Turnip Mosaic Virus | Potyvirus TuMV | Interveinal chlorosis observed. Leaves will sometime appear puckered and distorted. |
| 5077037 | Turnip Mosaic Virus | Potyvirus TuMV | Interveinal chlorosis observed. Leaves will sometime appear puckered and distorted.e-fla |
| 5077041 | Tomato Spotted Wilt Virus | Tospovirus TSWV | Concentric rings appear on fruit. Other symptoms include uneven ripening and brown splotches.ed. |
| 5077042 | Tomato Spotted Wilt Virus | Tospovirus TSWV | Plant is stunted and leaves may appear bronzed with many small lesions that may or may not contain a concentric ring pattern.¬ |
| 5077049 | Tomato Yellow Leaf Curl Virus | Begomovirus TYLCV | Bud area turns yellow and leaves are curled and reduced to give a "mouse-ear" appearance. Overall stunting of plant. |
| 5077054 | bacterial spot | Xanthomonas vesicatoria | Dark brown, irregular shaped splotches with chlorosis surrounding lesions. Splotches may have greasy appearance. Affected leaves will drop in latter stages when fungus is active. Entire plant may die. |
| 5077056 | Cucumber Mosaic Virus | Cucumovirus CMV | Chlorosis and puckering of leaf. Fruit symptom could be confused with Blossom End Rot.la |
| 5077057 | Tomato Spotted Wilt Virus | Tospovirus TSWV | Plant is dwarfed and stunted. Leaves are reduced in size and distorted. Faint rings can sometimes be observed on leaves. |
| 5077058 | Tomato Spotted Wilt Virus | Tospovirus TSWV | Small, irregular fruit with dark splotches. Fruit will not be marketable. |
| 5076069 | sour skin of onion | Burkholderia cepacia | Symptoms usually visible only after onions are dug. Outer layer of scales often becomes darkened and almost orange. Decay of inner scales leads to a soft rot that has a sour, vinegar-like odor.tmb=295 |
| 5076071 | bacterial leaf streak and bulb rot | Pseudomonas viridiflava | Symptoms appear as water-soaked, dark green areas at the base of the onion leaves. Affected leaves tear off without much force. Disease occurs more during cool, wet periods during onion production. |
| 5076097 | Cucumber Mosaic Virus | Cucumovirus CMV | Interveinal chlorosis observed. Leaves will sometimes look puckered and distorted.ve-fla |
| 5077006 | Squash Mosaic Virus | Comovirus SqMV | Leaves appear with yellow and green mosaic pattern. Leaves may be puckered and distorted. |
| 5077007 | Squash Mosaic Virus | Comovirus SqMV | Fruit appears with yellow and green streaks, splotches and raised areas (blisters). |
| 5077008 | bacterial black stalk | Erwinia spp. | Lower stem area will break during high wind or stress. Brown to orange area observed in latter stages. Strong putrid odor. |
| 5077009 | bacterial brown spot of bean/canker of stone fruit, twig blight | Pseudomonas syringae pv. syringae | Tan, irregular angular spots. Spots may drop out leaving a shot hole appearance. Pseudomonas is worse during cool weather. |
