In East Africa, lepidopteran stemborers such as Chilo partellus and Busseola fusca are major constraints to production of maize, which is the main staple food crop in the region. Cereals depend on silicon (Si)-based defences to fight off herbivores. Using altitudinal ranges in the East African highlands as ecological surrogates for inferring climate change, it was shown that Si concentrations in soil and maize decreased with altitude. This was attributed, in part, to low temperatures at high altitudes, which negatively affected Si assimilation by maize. Experiments showed that B. fusca was more susceptible to Si than C. partellus. Hence the predominance of B. fusca in the highlands and of C. partellus in the lowlands could be partly explained by altitudinal differences in Si concentrations in maize plants. Therefore, a rise in temperature due to climate change should enhance the plants' Si assimilation and as a result C. partellus might move into the higher altitudes and increasingly displace B. fusca. © 2016 Elsevier B.V.
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TI - Can climate-driven change influence silicon assimilation by cereals and hence the distribution of lepidopteran stem borers in East Africa?
AU - Calatayud, P.
AU - Njuguna, E.
AU - Mwalusepo, S.
AU - Gathara, M.
AU - Okuku, G.
AU - Kibe, A.
AU - Musyoka, B.
AU - Williamson, D.
AU - Ong’amo, G.
AU - Juma, G.
AU - Johansson, T.
AU - Subramanian, S.
AU - Gatebe, E.
AU - Le Ru, B.
AB - In East Africa, lepidopteran stemborers such as Chilo partellus and Busseola fusca are major constraints to production of maize, which is the main staple food crop in the region. Cereals depend on silicon (Si)-based defences to fight off herbivores. Using altitudinal ranges in the East African highlands as ecological surrogates for inferring climate change, it was shown that Si concentrations in soil and maize decreased with altitude. This was attributed, in part, to low temperatures at high altitudes, which negatively affected Si assimilation by maize. Experiments showed that B. fusca was more susceptible to Si than C. partellus. Hence the predominance of B. fusca in the highlands and of C. partellus in the lowlands could be partly explained by altitudinal differences in Si concentrations in maize plants. Therefore, a rise in temperature due to climate change should enhance the plants' Si assimilation and as a result C. partellus might move into the higher altitudes and increasingly displace B. fusca. © 2016 Elsevier B.V.
PY - 2016
UR - https://www.cifor-icraf.org/knowledge/publication/26358/
DO - https://doi.org/10.1016/j.agee.2016.03.040
KW - alkaloids, altitude, busseola fusca, chilo partellus, climate change, dicotyledons, eastern afromontane, global warming, lepidopteran stem borers, maize, metabolites, monocotyledons, silicon, temperature, terpenoids
ER -Endnote (.ciw)
%T Can climate-driven change influence silicon assimilation by cereals and hence the distribution of lepidopteran stem borers in East Africa?
%A Calatayud, P.
%A Njuguna, E.
%A Mwalusepo, S.
%A Gathara, M.
%A Okuku, G.
%A Kibe, A.
%A Musyoka, B.
%A Williamson, D.
%A Ong’amo, G.
%A Juma, G.
%A Johansson, T.
%A Subramanian, S.
%A Gatebe, E.
%A Le Ru, B.
%D 2016
%U https://www.cifor-icraf.org/knowledge/publication/26358/
%R https://doi.org/10.1016/j.agee.2016.03.040
%X In East Africa, lepidopteran stemborers such as Chilo partellus and Busseola fusca are major constraints to production of maize, which is the main staple food crop in the region. Cereals depend on silicon (Si)-based defences to fight off herbivores. Using altitudinal ranges in the East African highlands as ecological surrogates for inferring climate change, it was shown that Si concentrations in soil and maize decreased with altitude. This was attributed, in part, to low temperatures at high altitudes, which negatively affected Si assimilation by maize. Experiments showed that B. fusca was more susceptible to Si than C. partellus. Hence the predominance of B. fusca in the highlands and of C. partellus in the lowlands could be partly explained by altitudinal differences in Si concentrations in maize plants. Therefore, a rise in temperature due to climate change should enhance the plants' Si assimilation and as a result C. partellus might move into the higher altitudes and increasingly displace B. fusca. © 2016 Elsevier B.V.
%K alkaloids
%K altitude
%K busseola fusca
%K chilo partellus
%K climate change
%K dicotyledons
%K eastern afromontane
%K global warming
%K lepidopteran stem borers
%K maize
%K metabolites
%K monocotyledons
%K silicon
%K temperature
%K terpenoids
Année de publication
2016
ISSN
0167-8809
Auteurs
Calatayud, P.; Njuguna, E.; Mwalusepo, S.; Gathara, M.; Okuku, G.; Kibe, A.; Musyoka, B.; Williamson, D.; Ong’amo, G.; Juma, G.; Johansson, T.; Subramanian, S.; Gatebe, E.; Le Ru, B.
Langue
English
Mots clés
alkaloids, altitude, busseola fusca, chilo partellus, climate change, dicotyledons, eastern afromontane, global warming, lepidopteran stem borers, maize, metabolites, monocotyledons, silicon, temperature, terpenoids
Source
Agriculture, Ecosystems and Environment. 224: 95-103
Géographique
Kenya, Uganda, Tanzania
