So far we
have been looking at communication for the purpose of protection. We have
explored how plants communicate through chemicals, contact, light and sound.
Recently, a study has potentially identified a conversation between basil (Ocimum
basilicum) and chilli plants (Capsicum annuum). This study will confirm
what many gardeners have been witnessing since the dawn of agricultural
practice. That is, chilli does best with basil. The study found that when
blocking communication lines such as light, contact and sound, chilli
germination rates were high. More seedlings grew than without the presence of
basil. If growing with fennel (Foeniculum vulgare), germination
rates are lower than usual. The mechanism for communication in this case is
unknown. However, researchers are suggesting a possible acoustic signal
generation via nanomechanical oscillations from inside the cell. (Gagliano
& Renton 2013). This finding is a small step into gathering support for the
acoustic communication hypothesis. However, understanding this modality could
have great impact on the management of conservation as well as agriculture.
Figure1. Chilli and basil growing together in a pot. Photographer: Rosie. Marie.2007
References:
Gagliano, M.,Renton, M.2013. Love thy
neighbour; facilitation through the alternative signalling modality in plants.
BMC Ecology.13:19
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