Damage by the CVC bacteria result from the clogging of vessels in the xylem, which restricts water and nutrient supply in the plant. The bacteria, known scientifically as Xylella fastidiosa, colonizes the interior of the vessels, limiting sap flow. The photo above represents a magnification of 2.000 times, and the one below, of 1.440 times. Legend: a=xylem vessel free of bacteria; b=xylem vessel plugged by  X. fastidiosa; c=colony of CVC bacteria in a xylem vessel

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