Automatable downstream purification of the benzohydroxamic acid D-DIBOA from a biocatalytic synthesis

Testing the role of allelochemicals in different wheat cultivars to sustainably manage weeds

“…This confirms the studies of Li et al ., 32 who found an increase in DIMBOA exudates after growing a wheat variety with the weeds Abutilon theophrasti , Aegilops tauschii , Amaranthus retroflexus , Avena fatua and Digitaria sanguinalis , which were inhibited by this wheat variety. DIBOA has shown also strong inhibitory capacity against weeds, as recently demonstrated by De la Calle et al ., 14 who found that this HA induces the inhibition of the growth of barnyard grass, slender amaranth, guinea grass and annual ryegrass.…”

“…As shown by previous studies, 11 the hydroxamic acids DIMBOA and DIBOA are the most phytotoxic molecules exuded by wheat, followed by their decomposition products MBOA and BOA, respectively. All these compounds have been tested on different target species and are considered phytoallelochemicals 14,31,32 . In a recent field experiment, Yang et al 31 .…”

“…All these compounds have been tested on different target species and are considered phytoallelochemicals. 14,31,32 In a recent field experiment, Yang et al 31 tested two commercial wheat varieties with different abilities to produce DIMBOA and found that the wheat variety Jing411 with higher DIMBOA exudation was the one with the capacity to inhibit the growth of the weed Alopecurus myosuroides. This confirms the studies of Li et al, 32 who found an increase in DIMBOA exudates after growing a wheat variety with the weeds Abutilon theophrasti, Aegilops tauschii, Amaranthus retroflexus, Avena fatua and Digitaria sanguinalis, which were inhibited by this wheat variety.…”

“…In recent studies, DIBOA was reported as a molecule with strong phytotoxic effect, thanks to its ability to inhibit the growth of Megathyrsus maximus, followed by Echinochloa crus-galli and lastly Lolium rigidum. 14 BOA was found to alter the transcriptome, protein structure and metabolic activity of germinating seedlings, inhibiting germination and development, up-regulating plant defence, and occasionally even causing early induced senescence and death of sensitive species. [15][16][17] Recently, Hussain et al 7 found important contents of DIBOA, DIMBOA, MBOA, BOA, HMBOA and HBOA in the shoots, roots and radicle exudates of the wheat accession Ursita, finding differences in the concentration of these hydroxamic acids and other benzoxazinoids depending on the weed density present in the growth medium.…”

“…The dimethoxy analogue of DIMBOA, DIBOA and its degradation product BOA was found to be toxic to various plant species' seed germination and growth. In recent studies, DIBOA was reported as a molecule with strong phytotoxic effect, thanks to its ability to inhibit the growth of Megathyrsus maximus , followed by Echinochloa crus‐galli and lastly Lolium rigidum 14 . BOA was found to alter the transcriptome, protein structure and metabolic activity of germinating seedlings, inhibiting germination and development, up‐regulating plant defence, and occasionally even causing early induced senescence and death of sensitive species 15–17 .…”