bare
ROOTS
VOLUME 21 – NUMBER 6
August/September 2019
Featured Contributors
TF
TreeFrog is the founder and co-
inventor of Multiponics, an indoor
gardening manufacturer and
online boutique. He has a passion
for pushing innovative ag-tech
forward and is a consultant to the
NASA-funded X-Hab project at the
University of Colorado in Boulder.
MM Monica Mansfield owned an
indoor garden store for 5 1/2 years
before selling the business to
start a seven-acre homestead
with her husband, Owen. Monica
is passionate about gardening,
sustainable living, and holistic
health. She writes about these topics
and her homestead adventures on
her blog, thenaturelifeproject.com.
Contributors
+
Chris Bond
Sara Elliott
Kent Gruetzmacher
Philip McIntosh
Dr. Lynette Morgan
Alan Ray
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A
INDUCED RESISTANCES
Induced Resistances are responses triggered by the appearance of a pest,
pathogen, or other agent. There are two types of induced resistance in plants:
systemic acquired resistance (SAR) and induced systemic resistance. When a plant
is expressing SAR, it will manufacture and produce a hormonal response, generating
defensive proteins to protect itself as soon as it is exposed to any pathogen or pest.
Induced systemic resistance is mostly associated with plants grown in soil as it is
dependent on root contact with specific plant growth promoting rhizobacteria (PGPR)
in the soil. Once this connection between the roots and PGPR is made, plants produce
jasmonate and ethylene. They then release these hormones to both internally protect
themselves from pests and externally signal there is a problem.
Check out Chris Bond’s article on page 54 for more information.
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