Systemic Colonization of Strain YL19 Causing Dry Cavity Rot of Strawberry Crown Tissue in China.

usually causes angular leaf spot (ALS) of strawberry, a serious bacterial disease in many strawberry-producing regions worldwide. Recently, a new strain of (YL19) was isolated from strawberry in China and has been shown to cause dry cavity rot in strawberry crown. In this study, we constructed a green fluorescent protein (GFP)-labeled YL19 (YL19-GFP) to visualize the infection process and pathogen colonization in strawberries.

A point mutation in the gene encoding magnesium chelatase I subunit influences strawberry leaf color and metabolism.

Magnesium chelatase (MgCh) catalyzes the insertion of magnesium into protoporphyrin IX, a vital step in chlorophyll (Chl) biogenesis. The enzyme consists of 3 subunits, MgCh I subunit (CHLI), MgCh D subunit (CHLD), and MgCh H subunit (CHLH). The CHLI subunit is an ATPase that mediates catalysis.

First Report of strain YL19 causing crown infection pockets in strawberry in Liaoning Province, China.

Strawberry (Fragaria × ananassa Duch.) is an important fruit crop in China. Typical crown infection pockets symptoms were observed on the infected strawberry in Liaoning province, China (121°60'E, 38°90'N) in the autumn of 2017.