1) Brucine 2) Curare 3) Hemlock 4) Mycotoxin 5) Nicotine 6) Strychnine 7) Tubocurarine 1) Plant toxin 2) Toxin 
Phytotoxin refers to a substance, known as phytotoxic substances, in soils inhibitory to the growth of or poisonous to plants. Phytotoxic substances may result from human activity, or they may be produced by plant roots, by microorganisms, or by naturally-occurring chemical reactions. A good soil will protect plants from toxic concentrations of su...
1. A toxin produced by a microorganism and active against a plant or against plant cells/tissues. 2. A toxin produced by a plant. 
(from the article `poison`) Biotoxins can be conveniently grouped into three major categories: (1) microbial toxins, poisons produced by bacteria, blue-green algae, ...
A substance similar in its properties to an extracellular bacterial toxin. ... Synonym: plant toxin. ... Origin: phyto-+ G. Toxikon, poison ... (05 Mar 2000) ... 
(fi´to-tok″sin) an exotoxin produced by certain species of higher plants; any toxin of plant origin.
A substance poisonous to plants.Toxins which may endanger plant viability or functionality.
Type: Term Pronunciation: fī′tō-tok′sin Definitions: 1. A toxic substance of plant origin. Synonyms: plant toxin
Phytotoxin: A poison in a plant. Abrin and ricin are examples of phytotoxins. Abrin comes from the seeds of a plant called the rosary pea or jequirity pea and ricin from the seeds of the castor bean plant.