Ginger Disease Research Examples

Russell Galanti

University of Hawaii,
College of Tropical Agriculture,
Cooperative Extension

Viruses, being incredibly small, are hard to identify using normal methods for other plant pathogens. Molecular detection of these viruses was carried out primarily using the polymerase chain reaction (PCR) method, a method that makes copies of the viral genetic material. This genetic material is then sequenced and compared to other known sequences of viruses. Think of it as a genetic code that is similar among a certain classification of viruses, sometimes all the way down to the specific strain.

Summary Table 12/14/2019

Samples tested for: Uni Poty (Universal Potyvirus), BBrMV, Ampelovirus, Nucleorhabdovirus, Picorna, CYMoV

Sample RW1

Symptoms look like:
Nutrient Or CYMoV
Positive result(s) for:
Nucleorhabdovirus

Sample RW2

Symptoms look like:
BBrMV
Positive result(s) for:
Uni Poty
BBrMV
Ampelovirus
Nucleorhabdovirus

Sample RW3

Symptoms look like:
Leaf distortion
Positive result(s) for:
Nucleorhabdovirus

Sample RW4

Symptoms look like:
Leaf distortion
Positive result(s) for:
Nucleorhabdovirus

Sample JB1 JD1

Symptoms look like:
BBrMV
Positive result(s) for:
Uni Poty
BBrMV
Nucleorhabdovirus

Sample JB2 JD2

Symptoms look like:
BBrMV
Positive result(s) for:
Uni Poty
BBrMV
Nucleorhabdovirus

Sample JB3 JD3

Symptoms look like:
BBrMV
Positive result(s) for:
Uni Poty
BBrMV
Ampelovirus
Nucleorhabdovirus

Sample JB4 JD4

Symptoms look like:
BBrMV
Positive result(s) for:
Uni Poty
BBrMV

SUMMARY TABLE 11/08/2019 Oahu and Kauai

Samples tested for: Uni Poty (Universal Potyvirus), BBrMV, Ampelovirus, Nucleorhabdovirus, Picorna, CYMoV

Sample Oahu

Symptoms look like:
CYMoV
Positive result(s) for:
CYMoV

Sample K1-A

Symptoms look like:
CYMoV
BBrMV
Positive result(s) for:
CYMoV

Sample K1-B

Heliconia

Sample K1-C

Symptoms look like:
CYMoV
Positive result(s) for:
Ampelovirus
CYMoV

Sample K1-D

Symptoms look like:
Fungi streak
Positive result(s) for:
CYMoV

Sample K1-E

Symptoms look like:
Fungi streak
Positive result(s) for:
CYMoV

Sample K1-F

Symptoms look like:
CYMoV
Positive result(s) for:
Ampelovirus
CYMoV

Sample K2

Symptoms look like:
CYMoV
Positive result(s) for:
CYMoV

Sample K3

Symptoms look like:
Unknown dashes
Positive result(s) for:
CYMoV

Sample K4-A

Symptoms look like:
CYMoV
Small leaves
Positive result(s) for:
Ampelovirus
CYMoV

Sample K4-B

Symptoms look like:
CYMoV
Small leaves
Positive result(s) for:
Ampelovirus
CYMoV

Sample K4-C

Symptoms look like:
CYMoV
Small leaves
Positive result(s) for:
Ampelovirus
CYMoV

Sample K4-D

Symptoms look like:
CYMoV
Small leaves
Positive result(s) for:
Ampelovirus
CYMoV