Effects of one haustorium-inducing quinone DMBQ on growth and development of root hemiparasitic plant <i>Monochasma savatieri</i>

Chen, Lanlan; Zhu, Zaibiao; Guo, Qiaosheng; Guo, Jun; Huang, Zhigang; Shi, Yongtao; Wen, Zhencui

doi:10.1590/0103-8478cr20190649

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

CROP PRODUCTION • Cienc. Rural 50 (3) • 2020 • https://doi.org/10.1590/0103-8478cr20190649 copy

Effects of one haustorium-inducing quinone DMBQ on growth and development of root hemiparasitic plant Monochasma savatieri

Efeitos de quinona indutor de haustório (DMBQ) no crescimento e desenvolvimento de plantas hemiparasitárias de raiz Monochasma savatieri

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT:

Monochasma savatieri Franch. ex Maxim is a perennial, parasitic herb used in traditional Chinese medicine and its wild resources have decreased sharply in recent years due to destructively harvesting and habitat destruction. Haustorium formation is a key event of parasites, but the concentrations of haustorium-inducing factors vary with species and cultivation conditions. In this study, we investigated the effects of the 2,6-dimethoxy-p-benzoquinone (DMBQ) concentration and cultivation density on the growth traits, haustorium formation and biomass of M. savatieri in the absence of a host plant. The results showed that both the DMBQ concentration and cultivation density regulated growth traits, haustorium formation and biomass in M. savatieri. The number of haustoria was significantly positively correlated with seedling height, maximum root length, the number of root tips and total dry weight. Membership function analysis revealed an overall greater increase in growth traits, haustorium formation and biomass when M. savatieri was treated with 10 μmol·L^-1DMBQ and grew solitarily. These results offer an understanding of growth in M. savatieri influenced by the DMBQ concentration and cultivation density, which may aid in the establishment of a comprehensive cultivation system for M. savatieri or similar plants.

Key words:
artificial cultivation; density; DMBQ; fuzzy membership function; growth promotion

Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] E-mail: gqs@njau.edu.cn.^*Corresponding author.

Variates	DMBQ concentration	Plant density	DMBQ concentration × Cultivation density
Seedling height	55.27^**	19.51^**	8.92^**
Maximum root length	20.92^**	53.46^**	10.91^**
No. of leaves	9.44^**	26.59^**	0.99
Total leaf length	25.98^**	158.91^**	9.35^**
Total leaf width	20.91^**	147.47^**	3.09^**
Total leaf area	20.86^**	80.06^**	3.79^**
No. of root tips	29.03^**	56.68^**	13.02^**
No. of haustoria	60.25^**	64.76^**	10.47^**
Total dry weight	27.74^**	103.39^**	1.29

DMBQ concentration (μmol·L^-1)	Seedling height (mm)			Maximum root length (cm)
	One plant	Two plants	Four plants	One plant	Two plants	Four plants
0	6.6±0.3 j	8.3±0.2 de	7.2±0.1 hij	3.6±0.2 bcd	3.5±0.2 cde	2.7±0.1 g
0.1	9.5±0.3 ab	9.4±0.3 abc	7.8±0.4 efgh	4.3±0.1 a	4.0±0.2 b	3.5±0.2 cd
1	9.9±0.27 a	9.1±0.2 bc	8.8±0.5 cd	3.3±0.2 de	3.7±0.3 bcd	3.9±0.2 b
10	9.4±0.4 abc	9.0±0.5 bc	8.1±0.2 ef	4.5±0.3 a	4.4±0.2 a	3.2±0.1 ef
100	7.3±0.5 hi	8.1±0.5 efg	7.6±0.6 fgh	3.4±0.1 cde	3.8±0.0 bc	3.0±0.0 f
1000	6.8±0.3 ij	7.5±0.4 fgh	7.4±0.2 ghi	4.0±0.2 b	3.6±0.3 cd	3.3±0.2 de

	SH	RL	L	LL	LW	LA	RT	H	DW
SH	1	-	-	-	-	-	-	-	-
RL	0.43_**	1	-	-	-	-	-	-	-
L	0.64^**	0.41^**	1	-	-	-	-	-	-
LL	0.59^**	0.40^**	0.82^**	1	-	-	-	-	-
LW	0.58^**	0.53^**	0.81^**	0.86^**	1	-	-	-	-
LA	0.59^**	0.48^**	0.81^**	0.84^**	0.81^**	1	-	-	-
RT	0.52^**	0.55^**	0.57^**	0.58^**	0.69^**	0.54^**	1	-	-
H	0.58^**	0.46^**	0.26	0.06	0.15	0.20	0.27^*	1	-
DW	0.67^**	0.54^**	0.81^**	0.81^**	0.86^**	0.83^**	0.62^**	0.28^*	1

Treatments		SH	RL	L	LL	LW	LA	RT	H	DW	Average membership function values	Rank
DMBQ concentration	Cultivation density
0	1	0.09	0.51	0.26	0.06	0.41	0.33	0.34	0.43	0.38	0.31	12
0.1	1	0.83	0.81	0.71	0.36	0.69	0.54	0.54	0.61	0.59	0.63	3
1	1	0.93	0.37	0.39	0.30	0.83	0.85	0.93	0.91	0.90	0.71	2
10	1	0.81	0.88	0.94	0.76	0.71	0.74	0.71	0.82	0.61	0.78	1
100	1	0.28	0.42	0.76	0.09	0.53	0.44	0.58	0.64	0.56	0.48	7
1000	1	0.15	0.65	0.08	0.06	0.30	0.33	0.35	0.38	0.44	0.30	13
0	2	0.52	0.45	0.36	0.33	0.38	0.38	0.56	0.30	0.50	0.42	9
0.1	2	0.80	0.66	0.51	0.67	0.64	0.49	0.46	0.55	0.62	0.60	5
1	2	0.72	0.54	0.29	0.52	0.66	0.54	0.59	0.50	0.57	0.55	6
10	2	0.71	0.86	0.47	0.88	0.54	0.49	0.40	0.52	0.62	0.61	4
100	2	0.46	0.57	0.26	0.55	0.51	0.38	0.19	0.43	0.30	0.41	10
1000	2	0.33	0.49	0.13	0.30	0.23	0.28	0.28	0.25	0.25	0.28	14
0	4	0.25	0.07	0.14	0.30	0.09	0.10	0.03	0.09	0.06	0.13	18
0.1	4	0.40	0.46	0.07	0.61	0.25	0.26	0.18	0.17	0.44	0.31	11
1	4	0.64	0.64	0.40	0.58	0.35	0.36	0.28	0.26	0.33	0.43	8
10	4	0.48	0.29	0.33	0.42	0.19	0.31	0.12	0.20	0.19	0.28	15
100	4	0.35	0.22	0.19	0.39	0.14	0.21	0.15	0.09	0.11	0.20	16
1000	4	0.30	0.37	0.13	0.30	0.05	0.10	0.09	0.07	0.05	0.16	17