Symptoms on tomato  

• Organs attacked  :

• Symptoms :
  • Plant growth often slowed, with shorter internodal apices and smaller, sometimes rolled leaves. Plants infected early have a rather bushy habit, partly linked to the development of numerous axillaries (figures 1 and 2).
  • Deformed and discolored leaves: more or less yellow (yellows) and/or purplish (anthocyanin) (figures 3 and 4). Leaf blade often thicker, even brittle.
  • Sometimes presence of adventitious roots on the stems.
  • Abnormally straightened flowers, often sterile with morphological aberrations (figures 5 and 6):
    • the sepals, whose veins take on a purplish color, remain completely joined and the calyx is hypertrophied (big bud);
    • the flowers are sterile and the petals are green, with stamens of the same color (loss of floral pigment, virescence);
    • the sepals may be leaf-like (phyllody); we can also note the malformation or the absence of petals, stamens and carpels, the hyperdevelopment of the petioles, etc. ;
  • Rare fruits with reduced growth, hard coloring slowly and irregularly and having a rather thick peduncle contrasting with their reduced size fruits.

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• Signs  : no visible signs, confirm the possible presence of vectors.
• Possible confusion : herbicide phytotoxicity, TYLCV type virus, etc.

• Production areas affected :

• Phytoplasmas reported on tomato :

• Candidatus Phytoplasma asteris (16SrI-B)
• Candidatus Phytoplasma aurantifolia (16SrII-B)
• Candidatus Phytoplasma trifolii (16SrVI-A)
• Candidatus Phytoplasma solani (16SrXII-A)
• Candidatus Phytoplasma australiense (16SrXII-B)