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Boron deficiencies result in the inhibition of root growth, and eventually premature flower abortion. Understanding the genetic mechanisms underlying flower abortion in B\u2010limiting conditions could provide the basis to enhance B\u2010efficiency and prevent B\u2010deficiency\u2010related yield losses. In this study, we assessed transcriptomic responses to B\u2010deficiency in diverse inflorescence tissues at multiple time points of soil\u2010grown plants that were phenotypically unaffected by B\u2010deficiency until early flowering. Whilst transcript levels of known B transporters were higher in B\u2010deficient samples, these remained remarkably stable as the duration of B\u2010deficiency increased. Meanwhile, GO\u2010term enrichment analysis indicated a growing response resembling that of a pathogen or pest attack, escalating to a huge transcriptome response in shoot heads at mid\u2010flowering. Grouping differentially expressed genes within this tissue into MapMan functional bins indicated enrichment of genes related to wounding, jasmonic acid and WRKY transcription factors. Individual candidate genes for controlling the \u201cflowering\u2010without\u2010seed\u2010setting\u201d phenotype from within MapMan biotic stress bins include those of the metacaspase family, which have been implicated in orchestrating programmed cell death. Overall temporal expression patterns observed here imply a dynamic response to B\u2010deficiency, first increasing expression of B transporters before recruiting various biotic stress\u2010related pathways to coordinate targeted cell death, likely in response to as yet unidentified B\u2010deficiency induced damage\u2010associated molecular patterns (DAMPs). This response indicates new pathways to target and dissect to control B\u2010deficiency\u2010induced flower abortion and to develop more B\u2010efficient crops.<\/jats:p>","DOI":"10.1111\/ppl.14088","type":"journal-article","created":{"date-parts":[[2023,12,7]],"date-time":"2023-12-07T23:04:52Z","timestamp":1701990292000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["The <i>Brassica napus<\/i> boron deficient inflorescence transcriptome resembles a wounding and infection response"],"prefix":"10.1111","volume":"175","author":[{"given":"Bart","family":"Verwaaijen","sequence":"first","affiliation":[{"name":"Computational Biology, Faculty for Biology Bielefeld University  Bielefeld Germany"},{"name":"Center of Biotechnology, Bielefeld University  Bielefeld Germany"},{"name":"Department of Genetics Martin\u2010Luther\u2010University Halle\u2010Wittenberg  Halle (Saale) 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