Question:

Which of the following pathogen produces sporodochium

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Remember: Fusarium = Sporodochia; Graphium = Synnemata; Phoma = Pycnidia; Colletotrichum = Acervuli. This is a classic matching scheme in agricultural exams.
  • Graphium
  • Epicoccum
  • Phoma
  • Fusarium
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The Correct Option is D

Solution and Explanation

Step 1: Understanding the Concept:
A sporodochium is an asexual fruiting body characterized by a cushion-like stroma covered with a dense layer of short, simple conidiophores.
It is a taxonomic feature used to classify deuteromycetes (fungi imperfecti).

Step 2: Detailed Explanation:

Let us look at the asexual structures of the listed genera:
1. Graphium: Graphium is characterized by the production of synnemata, which are erect, cement-like bundles of conidiophores.
2. Phoma: Phoma is a member of the Sphaeropsidales and produces pycnidia, which are globose, flask-shaped, ostiolate fruiting bodies enclosing conidia.
3. Fusarium: Fusarium species produce macroconidia and microconidia.
The macroconidia are typically produced on specialized, cushion-like conidiophorous masses called sporodochia. Under humid conditions, these sporodochia appear as bright orange, pink, or peach-colored masses on infected plant tissues.

Step 3: Final Answer:

Fusarium is the plant pathogen known for producing sporodochia. Therefore, the correct option is (D).
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