diff --git a/frontend/scenarios/comment_fragment.feature b/frontend/scenarios/comment_fragment.feature
index d404f9b7..be34daf6 100644
--- a/frontend/scenarios/comment_fragment.feature
+++ b/frontend/scenarios/comment_fragment.feature
@@ -16,3 +16,15 @@ Scénario: de texte
   [plusieurs personnes se présentent à moi. Ayant identifié que je suis nouveau, elles me souhaitent la bienvenue]
   …
   """
+
+Scénario: de texte formaté en italique
+
+  Soit "Treignes, le 8 septembre 2012 (Christophe Lejeune)" le document principal
+  Et un document dont je suis l'auteur affiché comme glose et contenant :
+    """
+    [*plusieurs personnes*]
+    Mon commentaire sur ce passage
+    """
+  Et une session active avec mon compte
+  Alors la glose contient "plusieurs personnes"
+  Et la citation contient du texte en italique
diff --git a/frontend/src/components/CrossElementHighlighter.jsx b/frontend/src/components/CrossElementHighlighter.jsx
new file mode 100644
index 00000000..6f88e8cf
--- /dev/null
+++ b/frontend/src/components/CrossElementHighlighter.jsx
@@ -0,0 +1,84 @@
+import { useRef, useEffect } from 'react';
+
+function CrossElementHighlighter({ children, highlightText }) {
+  const containerRef = useRef(null);
+
+  useEffect(() => {
+    if (!containerRef.current) return;
+
+    const highlights = containerRef.current.querySelectorAll('mark');
+    highlights.forEach(mark => {
+      const parent = mark.parentNode;
+      while (mark.firstChild) {
+        parent.insertBefore(mark.firstChild, mark);
+      }
+      parent.removeChild(mark);
+      parent.normalize();
+    });
+
+    if (!highlightText) return;
+
+    const textNodes = [];
+    const walker = document.createTreeWalker(
+      containerRef.current,
+      NodeFilter.SHOW_TEXT,
+      {
+        acceptNode: (node) => {
+          if (node.textContent.trim() === '') return NodeFilter.FILTER_REJECT;
+          if (node.parentElement?.tagName === 'MARK') return NodeFilter.FILTER_REJECT;
+          return NodeFilter.FILTER_ACCEPT;
+        }
+      }
+    );
+    let node = walker.nextNode();
+    while (node) {
+      textNodes.push(node);
+      node = walker.nextNode();
+    }
+
+    let fullText = '';
+    const nodeMap = [];
+    textNodes.forEach(node => {
+      const start = fullText.length;
+      const text = node.textContent;
+      fullText += text;
+      nodeMap.push({ node, start, end: fullText.length, text });
+    });
+
+    const searchIndex = fullText.toLowerCase().indexOf(highlightText.toLowerCase());
+    if (searchIndex === -1) return;
+
+    const searchEnd = searchIndex + highlightText.length;
+    const affectedNodes = nodeMap.filter(item =>
+      (item.start < searchEnd && item.end > searchIndex)
+    );
+
+    affectedNodes.forEach((item, index) => {
+      const isFirst = index === 0;
+      const isLast = index === affectedNodes.length - 1;
+      const startOffset = isFirst ? searchIndex - item.start : 0;
+      const endOffset = isLast ? searchEnd - item.start : item.text.length;
+
+      const text = item.node.textContent;
+      const fragment = document.createDocumentFragment();
+
+      if (startOffset > 0) {
+        fragment.appendChild(document.createTextNode(text.substring(0, startOffset)));
+      }
+
+      const mark = document.createElement('mark');
+      mark.textContent = text.substring(startOffset, endOffset);
+      fragment.appendChild(mark);
+
+      if (endOffset < text.length) {
+        fragment.appendChild(document.createTextNode(text.substring(endOffset)));
+      }
+
+      item.node.parentNode.replaceChild(fragment, item.node);
+    });
+  }, [highlightText]);
+
+  return <div ref={containerRef}>{children}</div>;
+}
+
+export default CrossElementHighlighter;
\ No newline at end of file
diff --git a/frontend/src/components/FormattedText.jsx b/frontend/src/components/FormattedText.jsx
index 3b89be66..08ad07fd 100644
--- a/frontend/src/components/FormattedText.jsx
+++ b/frontend/src/components/FormattedText.jsx
@@ -10,29 +10,73 @@ function FormattedText({children, setHighlightedText, selectable, setSelectedTex
 
   const handleMouseUp = () => {
     if (selectable) {
-      let text = window.getSelection().toString();
-      setSelectedText(text);
-      setHighlightedText(text);
+      const selection = window.getSelection();
+      let plainText = selection.toString();
+      if (plainText.trim()) {
+        const markdownText = extractMarkdownFromSelection(selection);
+        setSelectedText(markdownText);
+        setHighlightedText(plainText);
+      }
     }
   };
 
-  return (<>
-    <ReactMarkdown
-      remarkPlugins={[remarkGfm, remarkDefinitionList, remarkUnwrapImages]}
-      components={{
-        img: (x) => embedVideo(x) || CroppedImage(x),
-        p: (x) => VideoComment(x)
-          || FragmentComment({...x, setHighlightedText})
-          || <p onMouseUp={handleMouseUp}>{x.children}</p>,
-        a: ({children, href}) => <a href={href}>{children}</a>
-      }}
-      remarkRehypeOptions={{
-        handlers: defListHastHandlers
-      }}
-    >
-      {children}
-    </ReactMarkdown>
-  </>);
+  return (
+    <div onMouseUp={handleMouseUp}>
+      <ReactMarkdown
+        remarkPlugins={[remarkGfm, remarkDefinitionList, remarkUnwrapImages]}
+        components={{
+          img: (x) => embedVideo(x) || CroppedImage(x),
+          p: (x) => VideoComment(x)
+            || FragmentComment({...x, setHighlightedText})
+            || <p>{x.children}</p>,
+          a: ({children, href}) => <a href={href}>{children}</a>
+        }}
+        remarkRehypeOptions={{
+          handlers: defListHastHandlers
+        }}
+      >
+        {children}
+      </ReactMarkdown>
+    </div>
+  );
+}
+
+function extractMarkdownFromSelection(selection) {
+  if (selection.rangeCount === 0) return selection.toString();
+  return processNode(selection.getRangeAt(0).cloneContents());
+}
+
+function getMarkdownMarkers(element) {
+  if (!element.tagName) return null;
+  const tag = element.tagName;
+  if (tag === 'EM' || tag === 'I') return { open: '*', close: '*' };
+  if (tag === 'STRONG' || tag === 'B') return { open: '**', close: '**' };
+  if (tag === 'CODE') return { open: '`', close: '`' };
+  if (tag === 'DEL' || tag === 'S') return { open: '~~', close: '~~' };
+  return null;
+}
+
+function processNode(node) {
+  if (node.nodeType === Node.TEXT_NODE) return node.textContent;
+
+  if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE) {
+    const markers = node.nodeType === Node.ELEMENT_NODE ? getMarkdownMarkers(node) : null;
+
+    let content = '';
+    for (const child of node.childNodes) {
+      content += processNode(child);
+    }
+
+    if (markers) {
+      const trimmedContent = content.trim();
+      const leadingSpaces = content.match(/^\s*/)[0];
+      const trailingSpaces = content.match(/\s*$/)[0];
+      return leadingSpaces + markers.open + trimmedContent + markers.close + trailingSpaces;
+    }
+    return content;
+  }
+
+  return '';
 }
 
 function getId(text) {
diff --git a/frontend/src/components/FragmentComment.jsx b/frontend/src/components/FragmentComment.jsx
index 305427d9..f659b78b 100644
--- a/frontend/src/components/FragmentComment.jsx
+++ b/frontend/src/components/FragmentComment.jsx
@@ -3,37 +3,30 @@ import '../styles/FragmentComment.css';
 function FragmentComment({ children, setHighlightedText }) {
   try {
     children = (children instanceof Array) ? children : [children];
+    const textContent = getTextContent(children);
     const citationRegex = /^\[.*\]\s*\n(.*)$/m;
-    if (citationRegex.test(children[0])) {
-      let [citation, comment] = children[0].split(/\n/);
-      citation = citation.replace(/[[\]]/g, '');
-      const commentParts = [
-        comment,
-        ...children.slice(1)
-      ].map((part, index) => (
-        <span key={index}>
-          {part}
-        </span>
+
+    if (citationRegex.test(textContent)) {
+      const { citationElements, commentElements, plainCitation } = splitCitationAndComment(children);
+
+      const commentParts = commentElements.map((part, index) => (
+        <span key={index}>{part}</span>
       ));
 
       return <p
-        onMouseEnter={
-          e => {
-            e.preventDefault();
-            e.stopPropagation();
-            setHighlightedText(citation);
-          }
-        }
-        onMouseLeave={
-          e => {
-            e.preventDefault();
-            e.stopPropagation();
-            setHighlightedText('');
-          }
-        }
+        onMouseEnter={e => {
+          e.preventDefault();
+          e.stopPropagation();
+          setHighlightedText(plainCitation);
+        }}
+        onMouseLeave={e => {
+          e.preventDefault();
+          e.stopPropagation();
+          setHighlightedText('');
+        }}
         className="fragment"
       >
-        <span className="citation">{citation}</span>
+        <span className="citation">{citationElements}</span>
         {commentParts}
       </p>;
     }
@@ -42,4 +35,79 @@ function FragmentComment({ children, setHighlightedText }) {
   }
 }
 
+function getTextContent(element) {
+  if (typeof element === 'string') return element;
+  if (Array.isArray(element)) return element.map(getTextContent).join('');
+  if (element?.props?.children) return getTextContent(element.props.children);
+  return '';
+}
+
+function splitCitationAndComment(children) {
+  const citationElements = [];
+  const commentElements = [];
+  let mode = 'before';
+  let plainCitation = '';
+
+  for (const child of children) {
+    const text = getTextContent(child);
+
+    if (mode === 'before') {
+      if (text.includes('[')) {
+        mode = 'citation';
+        if (typeof child === 'string') {
+          const afterBracket = child.split('[')[1];
+          if (afterBracket) {
+            if (afterBracket.includes(']')) {
+              const betweenBrackets = afterBracket.split(']')[0];
+              citationElements.push(betweenBrackets);
+              plainCitation += betweenBrackets;
+              const afterClosing = afterBracket.split(']').slice(1).join(']');
+              if (afterClosing) {
+                const commentText = afterClosing.replace(/^\n/, '');
+                if (commentText) commentElements.push(commentText);
+              }
+              mode = 'comment';
+            } else {
+              citationElements.push(afterBracket);
+              plainCitation += afterBracket;
+            }
+          }
+        }
+      }
+      continue;
+    }
+
+    if (mode === 'citation') {
+      if (text.includes(']')) {
+        mode = 'comment';
+        if (typeof child === 'string') {
+          const beforeBracket = child.split(']')[0];
+          if (beforeBracket) {
+            citationElements.push(beforeBracket);
+            plainCitation += beforeBracket;
+          }
+          const afterBracket = child.split(']').slice(1).join(']');
+          if (afterBracket) {
+            const commentText = afterBracket.replace(/^\n/, '');
+            if (commentText) commentElements.push(commentText);
+          }
+        } else {
+          citationElements.push(child);
+          plainCitation += text;
+        }
+      } else {
+        citationElements.push(child);
+        plainCitation += text;
+      }
+      continue;
+    }
+
+    if (mode === 'comment') {
+      commentElements.push(child);
+    }
+  }
+
+  return { citationElements, commentElements, plainCitation: plainCitation.trim() };
+}
+
 export default FragmentComment;
diff --git a/frontend/src/components/Passage.jsx b/frontend/src/components/Passage.jsx
index 7001609e..faf7edfb 100644
--- a/frontend/src/components/Passage.jsx
+++ b/frontend/src/components/Passage.jsx
@@ -4,7 +4,7 @@ import { useState } from 'react';
 import Container from 'react-bootstrap/Container';
 import Row from 'react-bootstrap/Row';
 import Col from 'react-bootstrap/Col';
-import { Marker } from 'react-mark.js';
+import CrossElementHighlighter from './CrossElementHighlighter';
 import FormattedText from './FormattedText';
 import EditableText from '../components/EditableText';
 import DiscreeteDropdown from './DiscreeteDropdown';
@@ -73,11 +73,11 @@ function PassageSource({children, isComposite, highlightedText, setHighlightedTe
 
 function SelectableFormattedText({children, highlightedText, setHighlightedText, setSelectedText}) {
   return (
-    <Marker mark={highlightedText} options={({separateWordSearch: false})}>
+    <CrossElementHighlighter highlightText={highlightedText}>
       <FormattedText selectable="true" {...{setSelectedText, setHighlightedText}}>
         {children}
       </FormattedText>
-    </Marker>
+    </CrossElementHighlighter>
   );
 }
 
diff --git a/frontend/src/styles/FragmentComment.css b/frontend/src/styles/FragmentComment.css
index 22a1b4a8..6710997c 100644
--- a/frontend/src/styles/FragmentComment.css
+++ b/frontend/src/styles/FragmentComment.css
@@ -12,3 +12,9 @@
     font-weight: bold;
 }
 
+/* Ensure all inline elements within citation inherit the bold and background */
+.fragment .citation * {
+    background-color: inherit;
+    font-weight: inherit;
+}
+
diff --git a/frontend/tests/outcome.js b/frontend/tests/outcome.js
index cf23f917..0326ecfb 100644
--- a/frontend/tests/outcome.js
+++ b/frontend/tests/outcome.js
@@ -202,3 +202,7 @@ Alors("la colonne {int} contient {string}", (column, text) => {
   cy.contains(`.lectern .main .col .col:nth-child(${column})`, text);
 });
 
+Alors("la citation contient du texte en italique", () => {
+  cy.get('.fragment .citation em').should('exist');
+});
+