| 武 欣，陈杨明珠，凌桂芝，黎晓峰.生长素萘乙酸对甘蔗锰毒的调控[J].广东农业科学,2018,45(5):14-18 |
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生长素萘乙酸对甘蔗锰毒的调控 |
| Regulation of NAA on sugarcane manganese toxicity |
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| DOI：10.16768/j.issn.1004-874X.2018.05.003 |
| 中文关键词: 甘蔗 生长素 锰 吸收 极性运输 根系生长 |
| 英文关键词: sugarcane auxin manganese absorption polar transport root growth |
| 基金项目:国家自然科学基金（31660593）；广西自然科学基金（2016GXNSFDA380038，2016GXNSF
AA380227）；亚热带农业生物资源保护与利用国家重点实验室开放课题（OSKL201509） |
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| 摘要点击次数: 1997 |
| 全文下载次数: 667 |
| 中文摘要: |
| 为探究萘乙酸对锰毒胁迫下的甘蔗锰铁含量、运输及分布的影响及生长素极性运输抑制剂对
植株锰含量的影响，以桂糖32 号为材料，进行水培试验，结果表明：10、50、100、500 nmol/L 萘乙酸处理
后，随着萘乙酸浓度的增加，甘蔗根系锰含量随之显著降低8.59%～36.11%，100 nmol/L 萘乙酸处理后完全
展开叶锰含量显著减少17.67%～25.56%，完全展开叶叶鞘中共质体及其残渣的锰含量显著减少40.00% 和
31.82%，但根表锰膜/ 根组织锰含量比、茎基部伤流液中Mn 浓度、叶片质外体、共质体及残渣中锰含量、
根系生长及植株中铁和亚铁含量萘乙酸处理与空白对照间差异不显著。生长素输出抑制剂三碘苯甲酸或萘
基邻氨甲酰苯甲酸（1 000 nmol/L）处理后，植株幼叶锰含量（76.64、73.45 mg/kg）显著高于对照（38.26
mg/kg）。说明生长素可能参与调控甘蔗对锰的吸收缓解锰毒。 |
| 英文摘要: |
| The research on effects of naphthaleneacetic acid on iron-manganese content，transport and
distribution and the influence of auxin polar transport inhibitor on Mn content under manganese toxicity in sugarcane
（Saccharum officinarum L） was designed with hydroponic experiments，treated on Guitang 32. The results
showed Mn content in roots significantly decreased by 8.59%～36.11% with the increase of NAA concentration
treated at 10，50，100，and 500 nmol/L. The Mn content in the fully expanded leaves also significantly reduced by
17.67%～25.56% after treatment with naphthaleneacetic acid，and the Mn contents in symplast and its residue of
sheath decreased by 40.00% and 31.82%；but the ratio of Mn content in the manganese plaque and root tissue，
Mn concentration in the bleeding fluid from stem base，Mn content in leaves apoplast，symplast and residue，root
growth and iron and ferrous iron content in the plant treated with naphthaleneacetic acid were no significant difference
compared with the control treatment. On the other hand，after treatment with the auxin output inhibitor triiodobenzoic
acid or naphthyl phthalamic acid（ 1 000 nmol/L），the Mn content of the unexpanded leaves（ 76.64，73.45 mg/kg）
significantly higher than the control（ 38.26 mg/kg）. These results suggested that auxin might participate in the
regulation of sugarcane on Mn absorption to alleviate Mn toxicity rather than transportation and distribution. |
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